Power Day 2026 is all about the unknowns of growing and the revenue we’ve yet to discover. The growth of plants is driven mainly by photosynthesis and transpiration, but have we reached the borderlines in this process or are there still undiscovered fields where we can make progress and developments? Inspired by this year’s overarching theme, Pure, Power Day 2026 invites professionals from across the horticultural value chain to explore what we don’t know yet. Instead of presenting answers, we’ll create space for open dialogue, unexpected insights, and shared learning.
As part of the 2026 edition, we’re hosting a renewed Power Day; a program designed to spark curiosity, connection, and collective discovery. The event will start with a keynote of Bosch Growers, elaborating on their expansion to the USA with strawberries, and how their unknowns, challenges and opportunities became apparent, and were tackled by themselves in the process of internationalization. Afterwards, participants of Power Day 2026 will dive deep in what the horticultural sector still must discover, to face and discuss new challenges and explore even newer opportunities. This will be done in a table-group setting, in collaboration with Marit and Peter Klapwijk, Division Q and multiple high-end moderators from the industry.
Let’s dive into the unknowns!

Tijmen van den Bosch, Moderator: Bart van Meurs, Wouter van den Bosch, Sjoerd Nieboer  , Marit Nieboer - Klapwijk, Stijn Weijns, Tiffany Tsui, Peter Klapwijk, Leo Swart, Tim Koning, Kim Schotborgh, Annet Breure

Power Day (Upgrade your ticket)

Learn to grow! 
Beanstalk stimulates the growth and development of people and organizations within the horticulture sector. We create an inspiring learning environment for all who work in our beautiful sector. A place to explore and develop talents, where your company is supported to evolve towards a future-proof (self-learning) organization.

Trainer

Nicole Kuleshova Shalumov is the Operations & Marketing Manager at Cultivators, a Dutch horticultural consultancy specializing in hydroponic leafy greens, licensed cannabis cultivation, and controlled environment agriculture (CEA). Her work combines project management, international business development, consortium coordination, and industry event organization within the global horticultural sector.
Originally from Israel and now based in the Netherlands, Nicole studied Horticulture & Business Management at HAS University of Applied Sciences, specializing in greenhouse cultivation and technology. During her studies, she also completed a minor at Wageningen University & Research (WUR).
At Cultivators, Nicole works on international horticultural projects focused on cultivation strategies, operational planning, and business case development for commercial growing facilities. She also coordinates the Leafy Hydroponic Consortium and leads the organization of the Leafy Hydroponics Summit (LHS), bringing together industry partners, growers, and researchers to support knowledge exchange and innovation within the leafy greens sector.

Operations & Marketing Manager

Hans Kristian Westrum is CSO and founder of SoilSteam International, a Scandinavian company developing innovative technologies for substrate reuse and soil remediation. He has worked extensively with researchers and institutions across Europe to document the efficacy of steam-based soil disinfection as a sustainable alternative to excavation and landfill. Westrum has co-authored and supported field trials and third-party studies demonstrating how thermal treatment effectively neutralizes invasive plants, pathogens, and nematodes while preserving soil fertility. He has presented the technology at international conferences and is engaged in bridging applied research with practical deployment in agriculture, landscaping, and environmental restoration. His academic and professional focus is on scalable, science-based solutions that combine environmental impact reduction with circular economy principles in soil and substrate management.

Ryan brings more than 30 years of hands-on experience in the cannabis and horitculture industry. A second-generation cultivator and two-time Cannabis Cup winner, he has consulted with commercial cultivation operations worldwide. Ryan has held board positions with organizations such as the NCIA, RII, and Grow Up, and is a familiar face on the global speaking circuit with appearances at events like MJBizCon, Grow Up Conference, Cultivate, the Canadian Greenhouse Conference, and Greentech.
Before joining Cultiwool, Ryan worked with a leading LED lighting company, offering technical cultivation support not only for cannabis but also for a range of other crops including tomatoes, leafy greens, and ornamentals. Outside the grow room, Ryan is a passionate home brewer and was recently named the 2024 Front Range Circuit Homebrewer of the Year.

North America Technical Sales Manager

www.cresultant.nl  www,plantscout.eu

Owner

Job has been commercially responsible for GreenTech Global for the past eight years. During this time, GreenTech Amsterdam evolved from a biannual event into an annual exhibition, and GreenTech Americas and GreenTech North America were successfully launched.
His enthusiasm, positive mindset, and strong passion for the horticulture industry have been instrumental in contributing to GreenTech’s continued success.

Senior Sales Manager

Nicola Donato is Business Development Manager at Green Gas & Liquids (GGL), a company specialising in proprietary CO₂ capture and utilisation (CCU), biogas upgrading, and emission control solutions green fuel production processes. Operating globally, GGL builds on a solid technological foundation following a spin-off from an established player in the process technology industry.
Nicola works with a focus on European and North American markets on a full commercial cycle helping greenhouses to recover their CO2 and reutilize it for crop fertilization.

Business Development manager

Laura van de Kreeke is a founding farmer at Growy, a vertical farming company based in Amsterdam. Driven by a strong belief that food systems must change, she is committed to making tasty, healthy, and affordable food accessible to everyone.
With over seven years of experience in controlled environment agriculture, Laura combines hands-on farming knowledge with a focus on the commercial side of the business. Her work spans sales, marketing, and communications, translating complex growing technology into clear value for chefs, retailers, and consumers.
At Growy, she is involved in connecting plant science, technology, and market demand, contributing to scalable, data-driven farming systems that improve consistency and efficiency. Alongside her work, she regularly gives talks and guest lectures on the future of food production and the role of vertical farming in building more resilient, local food systems.

Farmer

Gerrit Polder is senior researcher Computer Vision & Plant Phenotyping at the department Greenhouse Technology and the Agricultural Biosystems Engineering chair group of Wageningen University & Research. His research interests include photonic based sensing, including imaging spectroscopy and spectral imaging for disease detection and high throughput automated plant phenotyping both in protected cultivation and arable farming.

Computer Vision & Plant Phenotyping

Els Berckmoes has built a strong track record within horticultural research and innovation. She started her career as a researcher, with a strong focus on sustainable water use in greenhouse horticulture, working on solutions to optimize water efficiency, quality management, and circular water systems in intensive production environments. In addition, she provides hands-on advice to horticultural companies on the implementation of sustainable water management practices. Her work has always been closely linked to practice, supporting growers in making their operations more resilient and sustainable.
Over the years, she progressed to a leadership role and is now serving as director, where she combines strategic vision with a deep understanding of the sector’s practical needs.
Today, she is also actively involved in HORTIVEC, where the focus lies on demonstrating, developing, and accelerating the adoption of state-of-the-art technologies in horticulture. Through HORTIVEC, hands-on activities are organized on the work floor, enabling growers, crop workers, and new entrants such as students from horticultural and higher education programs to learn and experiment with new technologies.
As of 1 July, the merger between the Proefstation voor de Groenteteelt and Proefcentrum Hoogstraten will be completed, resulting in Harvestis, a new, future-oriented organization that strengthens collaboration and innovation capacity in the horticultural sector.

Director

Adrian is the Co founder and President of Roelands Plant Farms a vegetable plant propagation greenhouse located in Lambton Shores, Ontario, Canada.

President

Friso Klok is Chain Manager South & East Asia at Rijk Zwaan, where he focuses on strengthening strategic partnerships and value chain development across the rapidly evolving horticultural markets of South and East Asia. In his role, he works closely with growers, retailers, processors and supply chain partners to align market demand with innovative vegetable concepts and genetics.
With a strong focus on collaboration throughout the fresh produce chain, Friso supports the introduction and expansion of high-value vegetable categories, helping connect consumer trends, retail strategies and production opportunities across diverse international markets. His work contributes to the development of sustainable, market-driven horticultural solutions that create long-term value for both growers and commercial partners.

Global Chain Manager South & East Asia

Team Coördinator International Relations

Jouke Campen became an engineer in Applied Physics at the Technical University of Delft, specialized in heat and mass transfer. He started working at Wageningen UR in 1997. His main field of research is energy and climate control in protected horticulture. He finished his PhD on dehumidification of greenhouses October 2009. Currently he is the coordinator of the energy program of the ministry of Agriculture in The Netherlands involving annually 7 million EURO of projects on reducing energy use in the Dutch protected horticultural sector. Aside of this task he is international project manager for the last 20 years working on numerous projects all around the world.

International Project Manager

Dr. Silke Hemming is head of the Greenhouse Technology research team at Wageningen University & Research, The Netherlands. She is an expert on the field of novel greenhouse design concepts and modern greenhouse coverings for different climate zones world-wide with focus on resource efficiency. Her research is related to greenhouse covering and screen materials increasing light transmission, changing light spectrum, the effect of diffuse light, and energy saving by coverings, coatings and screens. Silke Hemming initiated research on the field of artificial intelligence and greenhouses control. She was leader of three International challenges on Autonomous Greenhouses and will present intermediate results of the 4th edition during Greentech. Her research group has expertise on the field of energy saving, greenhouse climate, modelling, data science, sensors and AI for greenhouse and indoor farming applications

Kendra Armstrong is an accomplished businessperson and scientist with over two decades of experience working in agribusiness and plant breeding. 
As CEO and Co-Founder at Crop Convergence, Kendra's enthusiasm for bridging the gap between science and business is what drives her to build the best decision-making tools to drive customers success. She is passionate about collaboration and wants to make increased marketable yield and sustainability in row, fruit, and vegetable crops a reality and not just an aspiration.
Kendra holds a Ph.D. from Iowa State University in Plant Breeding with minors in Statistics and Genetics.

CEO and Co-Founder

Accountmanager Digitalization

Joost holds a Master's degree in Biosystems Engineering from Wageningen University. With a strong technical background, he specializes in developing strawberry cultivation planning and management software at Delphy. Joost leverages his expertise to create data-driven solutions that enable growers to improve their cultivation practices.

Cultivation Engineer Soft Fruit

Paolo de Heer is working as data science consultant at the Digital Built Environment department of TNO. His research interests are artificial intelligence and optimisation, and he is currently the lead of the ‘computational models & tooling’ technology line of the department. In the High-Tech Greenhouses team of TNO, he advises on algorithms and modelling. Further more, he is also leading the AI team of the unit Mobility & Built Environment. He has a strong operational & long-term view, connecting people and knowledge through his extensive network and knack for effective and inspiring communication.

Data Science Consultant

The workplace is the best learning environment. Beanstalk assumes that all knowledge is already available.
As coach and trainer I am concerned with the individual people in the organization and I facilitate coaching processes to realize human growth.
Beanstalk helps to build future-proof companies in the agricultural sector by developing the people in the organization.
We approach learning and development of people as a growth process. We are continuously learning and developing! You can accelerate this process by working consciously and purposefully on development.  Together with Peter Klapwijk and Sjoerd Nieboer (family business 😊), we also organize away days for directors, management and entrepreneurs to reflect on leadership, trends, day to day activity and the future. 
I am also involved with Peter Klapwijk in the content and development of this Power day. Nice to meet you there.

Trainer/coach

Bart van Meurs is Head of Division Q within the Koppert Cress Group, where he focuses on the development and application of innovative technologies for sustainable cultivation. With extensive experience in greenhouse horticulture and innovation-driven projects, he works closely with growers, technology partners and start-ups to support the transition towards a more sustainable and resilient horticultural sector. As moderator of this event, Bart brings together his in-depth sector knowledge, strategic insight and ability to guide constructive dialogue on the future of food, technology and sustainability.

Researcher Delphy Improvement Centre

Dr. Jan-Gerd Frerichs leads technology development at OrbiFarm GmbH in Germany, where he drives innovation in fully automated controlled-environment agriculture (CEA) systems.
Prior to joining OrbiFarm®, he headed the Future Farming division at Körber Technologies GmbH where he and his teamdeveloped various concepts for the next level of growing indoors. Before joining Körber, he served as Senior Vice President for Software, Automation, and IT at Kalera (International) GmbH. There he played a pivotal role in developing automation and software solutions for large‑scale indoor farming operations. He further strengthened his industry impact as Chief Digital Officer and Head of Software & Automation at &ever GmbH, contributing significantly to pioneering innovations in indoor farming technology, from prototypes and local retail solutions up to highly automated farms in Kuwait and Singapore.
With extensive experience managing global, interdisciplinary teams across both start‑ups and established enterprises, Dr. Frerichs has consistently demonstrated strong strategic and organizational leadership.
He holds a PhD in Technical Chemistry from Leibniz University Hannover and a diploma in Electrical Engineering, underscoring his solid scientific foundation and technical expertise.
Dr. Frerichs’ career reflects a broad spectrum of experience across Total Controlled Environment Agriculture (TCEA), biotechnology, digitalization, automation, and adjacent technology domains—positioning him as a key driver in shaping the future of sustainable, technology‑enabled food production.

Marketing Manager

Ronald Hoek is CEO and co-founder of Blue Radix, a pioneering company revolutionizing horticulture through AI-driven solutions. With a profound commitment to sustainable greenhouse production, Ronald spearheads innovations that optimize crop yields while minimizing resource usage. With the Blue Radix team he unlocks the value of Autonomous Growing for greenhouse companies worldwide.

Jaime is a chemist specialising in Advanced Materials and works as an R&D researcher at AIMPLAS, a technology centre with over 35 years of experience in the plastics sector based in Valencia, Spain. His work focuses on developing innovative and sustainable plastic solutions that address real grower needs, spanning several research lines: advanced greenhouse covers engineered to optimise crop performance through temperature regulation, light spectrum modulation and water management; biobased and biodegradable materials for plasticulture and aquaculture; the valorisation of agricultural by-products into high-value composite materials; and soil quality improvement through controlled-release systems. With experience across national and European R&D projects, Jaime collaborates closely with industry partners and research institutions to translate cutting-edge materials science into scalable, practical , efficient and sustainable solutions, delivering measurable agronomic and economic value across the agricultural sector.

Development of Sustainable Materials in Agriculture & Aquaculture Group

A seasoned investment promotion professional, Seewraj brings more than two decade-plus of experience and exposure in the full spectrum investment promotion, investment facilitation, investment aftercare, trade/export promotion, policy formulation and business development. He has been very active in promoting Mauritius as an attractive investment destination in various markets worldwide including India, China, South Africa, Malaysia, Germany, France. He has successfully contributed in project implementation in different sectors of the Mauritian economy including manufacturing, agriculture / agro-industry, aquaculture, fisheries & seafood processing, energy, financial services, ICT, logistics, film industry, healthcare, etc. 
Seewraj was posted in India as Economic Counsellor at the Mauritius High Commission in Delhi, and at the Consulate of the Republic of Mauritius in Mumbai for 8 years. He had the responsibility of the Indian market for attracting investment from India to Mauritius and Africa.
After returning to Mauritius in February 2024, Seewraj is Director at Economic Development Board Mauritius. He is responsible for the portfolio of Manufacturing, Agriculture, Blue Economy and Circular Economy. In addition, as part of the Senior Management Team at EDB Mauritius, Seewraj actively engages in strategic initiatives like preparation of strategic, marketing and action plans and actions involving high level visits to Mauritius and overseas.
Seewraj holds a BComm from University of Durban Westville, South Africa and an MBA from University of Mauritius.

Manager Operations

<div>
Solution Architect specializing in Controlled Environment Agriculture (CEA), with over 10 years of experience in automation.
I help translate complex challenges in greenhouse and food production into scalable, data-driven solutions — improving efficiency, sustainability, and crop performance.
Passionate about accelerating digital innovation in the future of food.
</div>

Solution Architect CEA

Dr. Sebastian Kipp is Director Innovation at Klasmann-Deilmann, where he focuses on driving sustainable growing media solutions for professional horticulture. He leads innovation initiatives related to renewable raw materials, growing media technologies, and climate-friendly cultivation systems. Dr. Kipp studied plant sciences and received his PhD from the Technical University of Munich, specializing in plant phenotyping and sensor-based technologies for crop research. Today, his work focuses on developing next-generation growing media, including innovative biochar solutions as well as peatreduced and peat-free substrates to support more sustainable and climate-resilient horticultural production.

Director Innovation

Customer Success Manager

Managing Director

Green architect, inspirator and strategist.

Minister for Food Security, Fisheries and Horticulture

Ot Messemaker is Head of Business Finance at Skytree, an Amsterdam-based Direct Air Capture (DAC) company developing systems that capture CO₂ from ambient air on-site at greenhouses and integrate seamlessly with local infrastructure. In his role, Ot structures the subsidy programs and financial incentives that make DAC the most economical CO₂ source available on location. He brings over four years of experience at the intersection of DAC and Dutch horticulture, has led subsidy applications totaling more than EUR 100 million for greenhouse projects, and currently works with growers across more than 150 hectares of greenhouse area on DAC deployments.

Head of Business Finance

Janneke Grit, MSc earned her MSc degree in Greenhouse Horticulture in 2015 at Wageningen University. Thereafter she was a lecturer at HAS Green Academy teaching in the Horticulture & Business Management program. She instructed students plant physiology courses, provided courses to professionals and conducted applied research mainly in the field of greenhouse horticulture and vertical farming. Since 2023, she has been working as scientist at the Business Unit Greenhouse Horticulture of Wageningen University and Research. Her main area of expertise is greenhouse crop physiology, with a current focus on the safe application of new CO2 sources for horticulture and transitions to new cultivation systems. Her research is carried out in close collaboration with growers, the supply industry and the government.

Scientist Greenhouse Crop Physiology

Reinier Wolterbeek is the Chief Product Officer at ONNA Greens, Norway's largest commercial Indoor Vertical Farm. He is largely accountable for moving trial crops into commercial crops.
Before joining ONNA, Reinier was the co-founder and CTO of Sundrop Farms, developing, building and operating 6 medium & high-tech greenhouses in Australia, the Middle East, Europe and USA, growing tomatoes, cucumbers, bell peppers, strawberries & raspberries. 
Reinier has over &gt;20 years of innovative CEA experience with MSc degree from Wageningen University & Research.

Chief Product Officer

I am a senior lecturer and researcher at the HAS green academy University of Applied Sciences ('s Hertogenbosch, NL), department of Agri and Business, Team Horticulture and Arable Farming. Within the research I do, I am associated with the Professorships "Green Health (Groene Gezondheid)" and "Horticulture Technologies". This entails doing research, using modern and innovative technological advances within horticulture, to ensure quality (internal, phytonutrients, product health) of produce, allowing consumers to have an informed choice about the quality of their produce and the health benefits this may provide them upon prolonged consumption. Within the UAS system, the main focus of our research is to closely together with companies, Universities and governement to ensure the research we do is relevant and applicable in the sector. 
My previous experiences include:
PhD (University of East Anglia; John Innes Centre, Norwich, UK) 2002 (cereal starch metabolism);
PostDoc on Pollen-pistil interactions (Radboud University Nijmegen, NL)
Agricultural consultancy ( Sustainable Crop Management; ADAS, Cambridge, UK)
Seed Production Researcher (Nunhems / BASF Vegetable Seeds, NL)
Cereal breeding (Sorghum; DSV, NL)

Senior Lecturer and Researcher

For me - it's all about agriculture.  As business developer for www.festo.com I scout for AgTech topics, startups and business to bring more smart technology into a sector we all heavily depend on. At our family farm, we produce and market organic, regional and seasonal vegetables: www.heidehoefe.de und www.kartoffel-post.de

Buisiness Development Agriculture

Director Construction

Born and raised in the heart of the Dutch Westland, Renko Schuil has been immersed in fresh food production from an early age. His career in the Controlled Environment Agriculture (CEA) industry spans over two decades, during which he has gained extensive expertise across various facets of the sector. From hardware and growing systems to climate control, lighting, logistics, and automation, Renko has developed a comprehensive understanding of the intricate relationships between these key components. His broad experience enables him to take a holistic approach, helping growers and industry leaders optimize their operations with innovative solutions.
Renko is now representing TTA-ISO as Sales Manager Food. At TTA-ISO, ‘Food’ refers to all edible and medicinal crops grown in controlled environments, from high-tech greenhouses to fully enclosed vertical farms. With a strong focus on plant handling and processing, TTA-ISO applies its 25+ years of expertise in robotics and automation to develop turnkey solutions that improve efficiency and consistency in indoor farming.

Sales Manager Food

Mr. Tam is an agronomist with 17 years of experience in soil and indoor crop production. Currently, he works with over 300 indoor growers with total over 150 ha helping them grow cucumber and melon for the best result. He advises and supplies input materials for indoor production (seed, fertilizer, cocopeat substrate). He successfully created an earning model for indoor production and brought mutual benefits to small growers.
In his free time Tam enjoys working and working!

Indoor Crop Production Consultant (Cucumber & Melon Specialist)

Prof Harrison is the Managing Director of the Plant Sciences Group, which comprises approximately 1400 staff across 20 chair groups in Wageningen University and the insitute Wageningen Plant Research. In the Netherlands he is a member of the Top Team “Tuinbouw en Uitgangsmaterialen/ Horticulture and Starting Materials”, representing all Dutch Knowledge Insitutes . He provides strategic oversight of several programme boards for large regional and national initiatives on behalf of Wageningen U&R.  He is an honorary  professor at the University of Birmingham,UK. 
Previously he was an executive Director at NIAB (UK) with overall responsibility for NIAB’s portfolio of arable genetics, pathology, biotechnology, data science and crop characterisation. Alongside that he led NIAB’s contribution to the Crop Science Centre, the alliance between the University of Cambridge and NIAB, designed to bridge the gap between discovery science and societal impact. This alliance has received significant philanthropic support and rapidly established its position in the national innovation landscape. Prior to his role in Cambridge, he worked at East Malling as head of genetics, where he specialised in horticultural genetics and genomics of fruit crops.  
Prof Harrison has a PhD in evolutionary systems biology. His research group has worked to understand the evolution and genetic basis of complex traits, such as interactions between plants and microbes, particularly in horticultural crops. Outputs have included scientific knowledge, tools, techniques and products to underpin the sustainable development of the agricultural, horticultural and food industries, using both breeding and biotechnology solutions. His group was among the first to implement gene editing techniques in key horticultural crops and in fungi used for alternative protein production. Through collaborative work with industrial partners, he and his team have delivered disease resistance traits into multiple commercial breeding programmes, as well as having initiated new public-private breeding programmes funded by global partners.

Managing Director Plant Science Group

János Lóczi is a horticulture-driven entrepreneur and co-founder of Gremon Systems, a leader in data-driven greenhouse technology. With a background in commercial growing and international agribusiness, he combines practical crop knowledge with a strong focus on digital innovation. At Gremon Systems, he plays a key role in developing sensor-based solutions that provide real-time insight into plant behavior. Their technology uses advanced plant and substrate sensors, including precise weight-based measurements, to monitor water uptake, growth dynamics, and plant balance. This allows growers to understand exactly what their crop needs and when to act.
János is passionate about bridging the gap between traditional growing expertise and data-driven decision-making, supporting growers worldwide in moving toward more precise and ultimately more autonomous cultivation.

Co-Founder and President Gremon Systems

Founder

Erik Pekkeriet (1970) is Program Manager Vision + Robotics. He studied Mechanical Engineering at the NHL-Stenden University of Applied Sciences in Emmen. He specialized himself in Maintenance Technology and Management. After he finished his BSc he started his career at Philips as a project employee in maintenance management. In 1996 he started a new position within innovation management in a Greenhouse Horticulture Association. He started as a single consultant, but built and led a department with 5 innovation consultants. After 7 years he made a change to Wageningen University & Research, building great robots, vision sorting systems and new greenhouse production systems for, and together with farmers and machine manufacturers. Main projects he developed and worked on were: vision sorting systems for pot plants, cut flowers and vegetables in X-ray-, NIR-, Fluorescence- and RGB-technology in 2D and 3D; robot harvesting systems for cutting roses, gerberas, cucumbers, sweet peppers and tomatoes and new moving greenhouse production systems for chrysanthemum, pot plants and vertical farms. Erik coordinated the EU-project PicknPack (flexible robotic packaging systems) and NXTGEN Hightech Agrifood. Erik is also the founding father and network coordinator of the European Digital Innovation Hub network on Robotics named: agROBOfood
The last decade Erik broadened the robotic scope from greenhouse horticulture to open field, livestock, marine, food and other Wageningen agri-food domains. Erik is now leading the agilie team of the Agro Food Robotics Program which consist of 60 experts from Wageningen Reserarch. Erik is also an IPMA-C certified project manager. Other positions are:
<ul>
<li>Boardmember of the topicgroup on Agricultural Robotics at EU Robotics</li>
<li>Chair of topicgroup Greenhouse Horticultuire at the Nederlandse Vereniging voor Techniek in de Landbouw (Dutch Society of Technology in Agriculture)</li>
<li>Network coordinator at the European agROBOfood network</li>
<li>Advisory board member of the European Machine Vision Forum</li>
</ul>

Programme Manager Vision + Robotics

Project Manager, Business Development

Born and raised near the city of Mechelen, in Belgium’s main greenhouse vegetable‑growing area. As the son of a tomato and lettuce grower he literally grew up between the plants in a greenhouse. That’s where his passion for plants and greenhouse growing originates.
 
Specialized in hydroponic growing of leafy vegetables and herbs in open field, greenhouses or closed environments, and plant propagation. Currently consulting and supporting projects all over the world in different climate zones (like Japan, Belgium, the Netherlands, Germany and North America).

Managing Partner

Roel Janssen is Chief Business Development Manager at Eternal.ag. Before joining Eternal.ag, Roel served as Chief Business Officer at Planet Farms, a technology company that builds and operates fully autonomous vertical farms at scale. Prior to that, he spent 13 years at Signify (previously known as Philips Lighting), where in his latest role he was the Global Director for City Farming. Through his years at Signify and Planet Farms, Roel established himself as an industry expert in high tech horticulture and vertical farming and has been invited to speak and share his views around the globe. He has also served as a guest lecturer at the HAS University of Applied Science in the Netherlands. Roel holds a degree in Business Administration from Eindhoven, where he still lives with his wife and two children. Alongside his passion for sustainable agriculture, Roel is an avid wine enthusiast and holds a WSET Level 3 certification.

Chief Business Development Officer

Stef Maree (PhD), is programme manager Autonomous Cultivation at Wageningen Research. He focusses on bringing the latest development from the fields of Artificial Intelligence and Machine Learning into agriculture, helping growers to grow more sustainably and making healthy food available worldwide.

Programme Manager Autonomous Cultivation

Innovation Manager

As Senior Researcher Plant Health I work at Wageningen University and Research Horticulture leading a research team with focus on hostplant resistance/resilience to pests and diseases in greenhouse crops.  I am an Agricultural Engineer specialized in Plant Production (Agricultural Ing. University of Bonn, Germany) and have obtained an MSc in Pest Management (Imperial College London, UK) sustained by a grant from the German Academic Exchange Service. Thereafter, I obtained a PhD in biological control of weeds with fungi (University of Fribourg, Switzerland). My research continued in the Netherlands on diagnosis and control of pests and diseases in indoor horticulture at the University of Leiden  specializing in identifying chemical plant compounds related to host plant resistance/resilience to pests and diseases. Identified compounds are subsequently used for resistance breeding, inducing resistance in susceptible varieties and development of biopesticides. Currently, I pursue the practical application of this approach at Wageningen University and Research leading research projects in: design and implementation  of sustainable and resilient cultivation systems in ornamentals, vegetables and bulbs; use of LED lights for induction of plant resilience; reduction of nitrate fertilization to increase plant resilience and most recently early detection methods of pests and diseases via (hyperspectral) imaging, volatile detection, airborne spore monitoring and use of electrophysiological sensors. As such I closely co-operate with government institutions, growers and companies in the horticultural sector.

Senior Researcher Plant Health

Ben Nikaj is a highly accomplished Senior Crop Advisor at Grodan, leading provider of root zone management solutions for professional horticulture. With an impressive career spanning over 22 years, Ben supports vegetable and medicinal crop growers worldwide in optimizing their irrigation strategies and cultivation methods. Ben’s focus is on sustainable and efficient solutions to enhance plant performance and product quality. Ben’s unparalleled expertise plays a pivotal role in advancing innovative substrates and cultivation techniques.

Senior Crop Advisor Medicinal Plants

Senior Cannabis Consultant and Horticultural Scientist with over a decade of experience establishing and optimizing regulated operations across North America and Europe. My career is defined by a unique ability to bridge the gap between technical horticultural science and complex regulatory compliance.
Throughout my 12 years in commercial operations, I have guided clients through the nuanced requirements of production and commercial best practices across seven U.S. states and the EU. I specialize in cultivation, licensing applications, GMP/GAP standardization, facility design, and the creation of robust compliance frameworks that reduce risk and ensure operational excellence.

Cannabis Advisor

The core is focused on an affinity with technology and desiring to find optimal and new solutions. These can translate to incorporating new designs on existing systems as well as presenting new innovations to optimize processes. Designing new projects where complex and multi-layered iterative processes form obstacles have proven to hold my interest and are considered a welcome challenge.
As a research and development engineer I’ve been focused on climate and energy and improving the supporting systems in horticulture. With the vision that a stronger market benefits all, the market for horticultural projects is far from saturated. In this, optimizing our ecological footprint, the sustainability of projects on both the resource and finance sides and ensuring fresh and healthy products leave the site, are an on-going and long-term challenge for us all.

Director/Owner

Simone is the chairman of the Union of coffeeshop retailers in the Netherlands, kandidate for the European Parlement and working at the national and international level to advance regulation of cannabis and to professionalize the emerging industry. She is ons of the key figures who advocates on the legalization on a European level.

Voorzitter

Researcher

Jesse Verbeke plays a key role at Phormium Climate Screens, where he supports customers in selecting and using climate screens in the most optimal way. He has extensive knowledge about screen properties and is actively involved in the development of new screen types, helping to innovate and refine solutions that meet the evolving needs of the horticultural industry.

Product manager

Project Management DIN EPD Program

Consultant in global controlled environment agriculture space with 8+ years of experience across vertical farming, greenhouse systems, and fresh produce supply chains. Co-founder and editor at VerticalFarmDaily, part of a global family media group with 16+ industry publications, where I built a strong network and in depth market insight. I now support companies and startups with market research, go to market strategy, and business development.

Information Manager / Entrepreneur

Researcher in high tech cultivation systems and vertical farming at the Business Unit Greenhouse Horticulture and Flower Bulbs (WUR).

Rien Kamman is CEO and Co-Founder of Source.ag, leading the company’s global mission to empower fruit and vegetable growers with AI. Since 2020, he has driven Source.ag’s expansion and vision to make high-tech, efficient greenhouse farming accessible and scalable worldwide.

CEO & Co-founder

Anneke van de Kamp comes from the Netherlands and holds a Master’s degree in Horticulture & Phytopathology from Wageningen University. She started her professional career in 1990 as a staff member at the Central Office of the Horticultural Auctions.
Over the years, Anneke has built extensive expertise in traceability, sustainability, and food safety through roles at DLV Advisory Group, the Product Board for Arable Crops, and the Product Board for Horticulture.
Since 2012, she has been Group Manager Communication, Public Affairs at the Dutch vegetable breeding company Rijk Zwaan. 
In her role at Rijk Zwaan, Anneke focuses strongly on strategic communication, public affairs and foresight, with a particular emphasis on stakeholder engagement and anticipating developments that impact the future of horticulture, including sustainability, food security, and innovation.
Anneke is actively involved in international sector organizations. She is Chair of the Public Affairs & Foresight Committee (HC) of Plantum. She also participates in the CPOL of Euroseeds and the ISF Value Chain and ESR coordination Groups.
From 2020 -2025, she was member of the Top Team Horticulture & Starting Materials. Since January 1, she serves as Chair of TKI Horticulture & Starting Materials, where she contributes to strengthening innovation and public-private collaboration in the sector.
I

Chairman Board

Annie van de Riet is the President of AVAG, the association for the Dutch greenhouse technology sector. With a background in economic geography and extensive experience in both horticulture and advocacy, she is committed to driving the industry forward. AVAG represents 80 companies with a combined turnover of €3 billion, 80% of which comes from exports. These companies collaborate to develop quality standards, conduct research, and drive innovation in a pre-competitive environment. This collective effort has made the sector a global leader. A Dutch supplier is synonymous with state-of-the-art technology and top-quality solutions.

Tom de Vos is a Consulting Sales Engineer at Sprinkler Energy, a company specialized in sustainable energy solutions for the horticultural industry. Sprinkler Energy helps growers and businesses reduce their dependency on natural gas through innovative heat pump systems, thermal energy storage, and integrated energy solutions. The company focuses on lowering energy costs, reducing CO₂ emissions, and supporting the transition toward future-proof and more sustainable greenhouse operations. During GreenTech Amsterdam 2026, Tom shares his expertise on innovative energy technologies, grid congestion challenges, and the transition toward fossil-free horticulture.

Consulting Sales Engineer

Founder & Head of Content and Policy

Connecting people and organisations, address sustainability challenges, facilitate cross-disciplinary collaborations and find innovative solutions is my passion.  Connect business partners with the well-known knowledge institute Wageningen Plant Research in order to enforece collaboration and making it possible that knowledge and innovative ideas finds its way to the market and vice versa

Program Manager

Cultivation Specialist

Marc Celis is an internationally experienced hydroponic leafy greens specialist at Rijk Zwaan, with more than 30 years of expertise in hydroponic lettuce production and controlled environment agriculture (CEA). Originally from Belgium, he supports growers, investors and horticultural partners worldwide in the development of hydroponic and high-tech leafy green projects.
 
His work focuses on integrating genetics, cultivation strategies and production systems to optimize yield, quality, shelf life and operational efficiency in greenhouse and indoor farming environments. Marc Celis is widely recognized for his practical and market-oriented approach to hydroponic production and regularly shares his expertise through international industry events and project collaborations.

Hydroponic specialist lettuce

Researcher plant physiology

Joost Damen is an Integration & Automation expert at Dots & Arrows, a member of Spire, where he helps organizations build scalable digital foundations through API-led integration and intelligent automation. With a strong focus on connecting systems, data, and processes, Joost works with companies to modernize their integration landscapes and enable faster innovation across the enterprise.
Passionate about the practical application of emerging technologies, Joost specializes in designing integration architectures that are secure, governable, and future-ready. His work bridges the gap between enterprise integration strategy and the next generation of AI-driven operations, helping organizations prepare for the shift toward agentic enterprises.
In his sessions, Joost combines hands-on experience with a forward-looking perspective on how APIs, automation, and intelligent agents can work together to create resilient and adaptable digital ecosystems.

Integration & Automation expert

Colinda de Beer is on a mission to connect tech with greenhouse horticulture. With a background as a horticultural researcher, software developer and R&D manager she is a tech translator and intrapreneur with over 35 years of experience. She regularly writes columns about subjects like innovation, robotics and AI. In her current role as a senior business developer for InnovationQuarter, she likes to combine a strategic and hands-on approach. This shows in her coaching and connecting students, startups, scaleups and companies from outside the horticultural and her role as initiator of RoboCrops and co-author of the digitalization vision for greenhouse horticulture.

Senior Business developer Horticulture

Wesley Petzer is a South African-born cultivation and international market development specialist based in the Netherlands. He is Global Brand Representative and Growing Consultant for Atami Nutrients and Founder of Petzer Consulting BV, a consultancy focused on cultivation strategy, nutrient programmes, brand development and commercial growth within cannabis and controlled-environment horticulture.
With more than ten years of hands-on cultivation experience, Wesley has worked across legacy, regulated and emerging cannabis markets. His background combines farming, agricultural economics, compliance, software, product education and business development, allowing him to connect technical cultivation realities with broader commercial and market opportunities.
Before founding Petzer Consulting BV, Wesley worked as Business Development Manager Africa at Cannavigia, supporting the expansion of cannabis compliance technology in developing and regulated markets. Today, he works with growers, brands, distributors and industry partners across Europe, Africa, North America and emerging markets, helping translate cultivation knowledge into stronger positioning, trusted partnerships and scalable market strategies.
Wesley’s work is driven by a belief that the future of high-value horticulture depends not only on better products and better cultivation, but also on education, transparency, credible branding and meaningful international collaboration.

Global Brand Representative & Growing Consultant, Atami Nutrients | Founder, Petzer Consulting BV

Christopher Leavitt is a cannabis breeder and tissue culture scientist who founded Voyager Genetics, a clone-only B2B genetics business specializing in servicing commercial medical cultivations. He is based out of Portugal, but works internationally with clients in Thailand, Portugal, South Africa, and the UK. He is the former CSO/COO of Compound Genetics and co-founder at Node Labs in San Francisco, California. His approach to cannabis clone development is unique- combining the use of plant tissue culture techniques and traditional clone selection techniques within the compliant medical framework, while balancing the art and science of breeding exceptional flavors into plants that perform agronomically.

Industrial PhD candidate since 2023, specializing in greenhouse cultivation of Cannabis using supplemental LED lighting. Focused on developing new strategies to improve crop efficiency, product quality, and energy sustainability through precise resource control.

PhD student

Managing director

Innovation Project Manager

Peter van Hooft, Head of Project Development EMEA at Skytree, leads the development of direct air capture (DAC) projects across Europe, the Middle East, Africa. He focuses on advancing local CO₂ generation solutions for industries including indoor farming, CDR and Power-to-X projects, greenhouses, and mineralization, supporting the transition away from fossil fuel-based CO₂ supply. Drawing on his experience in innovation strategy and public-private collaborations, Peter helps create scalable pathways for cleaner industrial processes.

VP of Project Development

Ir. Eric Poot has been manager of Delphy Improvement Centre in Bleiswijk since April 2024, where he leads applied research in greenhouse horticulture. With his team he focuses on the development and application of knowledge and technological innovations within cultivation systems, with the aim of making the sector more sustainable and future-proof. Before his position at Delphy, Poot worked for years at Wageningen University & Research (WUR), where he was team leader within the Greenhouse Horticulture & Flower Bulbs business unit. At WUR, he was involved in a large number of projects as project leader and researcher, including projects about transitions and (system) innovations. Poot is an advocate of knowledge sharing and cooperation between research, business and education. He emphasizes the importance of integral approaches, in which factors such as light, climate and energy consumption are jointly optimized, and in which digitalization plays an essential enabling role. His vision is that horticulture makes an essential contribution to a healthy diet and the well-being of people worldwide, and that knowledge and technology play key roles in achieving sustainable food production.

Manager Team Improvement Centre

Gonçalo is a Robotics Engineer who started his journey as a researcher at the Institute of Systems and Robotics at the University of Coimbra, Portugal. Afterwards he became the CTO, and later CEO of CoolFarm, a cloud-based, AI software company that developed control systems for indoor farming. He is currently the CEO of Periplo Innovation and Head of Software and Robotics at PlanetFarms.

Head of Software and Robotics

Professor of Controlled Environment Agriculture (CEA) specializing in vertical farming, indoor agriculture, and climate-smart food systems. His work advances food security by integrating plant physiology, environmental sustainability, and agri-tech innovation. With over 15 years of experience across academia and industry, Prof Gauthier advises corporations, investors, universities, and growers on vertical farming strategies, indoor production systems, and AgTech development, translating plant science into scalable, real-world solutions. He serves on boards of Asia-Pacific agribusiness and AgTech organizations and have held leadership roles across academia, startups, and large research initiatives, collaborating with industry and public partners to design high-efficiency, resilient agricultural systems. A Professor, keynote speaker, consultant, and published researcher, Prof Gauthier holds a Ph.D. in Plant Physiology and Horticulture, with additional training in Business Management and Marketing, and have served as faculty at Princeton University, UC Davis, and Penn State. His mission is to accelerate innovation in climate-smart agriculture and global food security by connecting science, education, and industry.

Associate Professor

Not an armchair expert, but with both feet still in the trenches. As Managing Director of LetsGrow.com, Gabriël van der Kruijk is deeply involved in technological innovation that delivers real impact. He looks beyond the hype and shares down‑to‑earth, practical insights. With his enthusiasm and energy, he consistently connects effortlessly with his audience.
With more than twenty years of experience in the tech sector, Gabriël has a strong track record in developing digital and AI solutions. His in‑depth knowledge of the horticulture sector has been shaped by hands‑on experience; he was a key driver behind the digital transformations of global players such as Rijk Zwaan and Koppert. This experience enables him to truly understand how to successfully apply technology in horticulture.
The common thread throughout his career is translating technological capabilities into tangible business results, always through a customer‑focused and co‑creative approach. In his keynote sessions, Gabriël shares concrete insights and thought‑provoking real‑world examples. In workshops, he dives deep, guiding participants in translating their own challenges into effective digital solutions.

Director LetsGrow.com

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