PROOF Westland

There it blooms!

PROOF Westland - logo - metazet (1)
Harmoniz- logo - kleur

About us

We are three specialists HortiTech, Metazet and Harmoniz who have won their spurs in horticulture. One is dyed-in-the-wool in innovation, research and applications. The other is an expert in steel, metal structures, technology and accessories for horticulture. The third a world player when it comes to breeding tomato plants and greenhouse seeds.

We found each other in the same desire and a shared ambition: to create a place for R&D, innovations, testing and demonstrations. In the Westland, of course. For ourselves. For our customers. For startups, innovators, growers, horticulturalists and technical suppliers in greenhouse horticulture. Who want to develop, innovate, accelerate and share knowledge.

The search led to the ideal location in Honselersdijk in the former Floralis Lisianthus nursery. There now stands a colourful and sustainable collective building slash R&D nursery with the resounding name PROOF. Made possible by a joint investment for which we are happy to stick our necks out.

We are entrepreneurial companies working independently. That remains the case. But we also seek each other out. And benefit and learn from each other's strength, expertise, network and specialism. Harmoniz, for instance, uses HortiTech's cultivation knowledge. In turn, HortiTech benefits from Harmoniz's breeding skills. Metazet brings in the hardware and engineering knowledge for building and construction to make horticulture smarter. We share our ambition and expertise with everyone who wants to work towards a sustainable future of greenhouse horticulture.

We find inspiration in our daily work. Walking through the greenhouses. Back at the office. At the drawing board. Talking to our suppliers and customers. We are all in our element in the greenhouse, true Westlanders who are proud of what we do. Always looking for new knowledge, solutions and practical applications. No-nonsense, down-to-earth, with a healthy dose of ambition and both feet firmly planted in the greenhouse.

We operate quickly, flexibly and innovatively. We love a challenge and think along in the application and development of new cultivation techniques.

Proof Partners

HortiTech - logo - wit (2)

HortiTech was founded in 2019, when Peet van Adrichem joined forces with Pim and Perry van Adrichem after he finished his job as initiator and creator of the World Horti Center. The main idea behind this unique organisation is to help the world grow, with knowledge gained and perfected in the Netherlands.

HortiTech aims to advance the future of greenhouse horticulture by sharing innovative knowledge. We support universities, students and companies with workshops, training courses and experiments. Our mission is to bridge the gap between theory and practice and help customers achieve their commercial goals.

The best cultivation and logistics solutions are created by cooperating with the grower, listening, thinking along with him and doing so. As a family business and supporter of growth, Metazet develops customised solutions that increase productivity, improve working conditions and make processes more efficient. Since 1978, they have been supplying proven systems and innovative technologies that make greenhouses future-proof. Everything is developed, produced and tested in-house in their R&D centre and demo greenhouse. Their expertise and ambition drive Metazet to continue setting new standards. Together, they work on the best solutions, because together is the strongest construction.

Harmoniz combines advanced technology and specialised breeding capabilities to create vegetables that enhance flavours, increase yields and promote sustainability. With a focus on innovation and collaboration, they deliver delicious, sustainable produce year-round that offers value to growers, retailers and consumers. Their commitment to quality and taste is central, ensuring that each variety is offered with confidence and love.
HortiTech - logo - wit (2)

HortiTech was founded in 2019, when Peet van Adrichem joined forces with Pim and Perry van Adrichem after he finished his job as initiator and creator of the World Horti Center. The main idea behind this unique organisation is to help the world grow, with knowledge gained and perfected in the Netherlands.

HortiTech aims to advance the future of greenhouse horticulture by sharing innovative knowledge. We support universities, students and companies with workshops, training courses and experiments. Our mission is to bridge the gap between theory and practice and help customers achieve their commercial goals.

The best cultivation and logistics solutions are created by cooperating with the grower, listening, thinking along with him and doing so. As a family business and supporter of growth, Metazet develops customised solutions that increase productivity, improve working conditions and make processes more efficient. Since 1978, they have been supplying proven systems and innovative technologies that make greenhouses future-proof. Everything is developed, produced and tested in-house in their R&D centre and demo greenhouse. Their expertise and ambition drive Metazet to continue setting new standards. Together, they work on the best solutions, because together is the strongest construction.

Harmoniz combines advanced technology and specialised breeding capabilities to create vegetables that enhance flavours, increase yields and promote sustainability. With a focus on innovation and collaboration, they deliver delicious, sustainable produce year-round that offers value to growers, retailers and consumers. Their commitment to quality and taste is central, ensuring that each variety is offered with confidence and love.

In the media

Proof in pictures

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