Modern greenhouse tomato crop
Roel Klap Growing

Growing better crops starts with understanding the plant.

Practical greenhouse expertise in tomato and cucumber cultivation.

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Practical. Experienced. Hands-on.

Experience from the crop, not just from behind a desk.

With years of experience in professional greenhouse horticulture, I work directly with growers and cultivation teams to improve crop performance and get more out of every crop.

My approach is practical and hands-on. I look at what is happening in the crop, identify where improvements can be made, and work together with the team to put those improvements into practice.

Roel Klap working in a greenhouse
DUTCH GREENHOUSE ROOTS

From Dutch greenhouse roots to Europe.

I grew up in the Netherlands, right in the heart of the greenhouse industry. I gained my experience working with some of the largest greenhouse companies in the Netherlands. With 15+ years of experience as a cultivation specialist, I bring a strong practical background in professional greenhouse horticulture.

For the past 7 years, I have worked independently across the EU, supporting growers across different crops, climates and production systems.

Specialised cultivation

Tomatoes & Cucumbers

Tomato crop and fruit quality

Tomatoes

Practical experience across different tomato varieties and climates — from the Dutch maritime climate to hot, dry continental conditions.

Cucumber greenhouse crop

Cucumbers

Practical experience in cucumber cultivation, with a focus on crop balance, plant activity, production and quality throughout the season.

What I bring

Practical expertise.
Independent perspective.
Cultivation & team development.

Cultivation expertise

Hands-on experience in greenhouse cultivation, working directly with crops and cultivation teams to improve crop performance, yield and quality.

Independent perspective

An experienced outside view of your crop and cultivation strategy — whether you need to solve a challenge, optimise performance or simply confirm that you are on the right track.

Cultivation & Team Development

Supporting cultivation teams by sharing knowledge, training growers and helping build the skills needed for confident, consistent decision-making.

Areas of expertise

Knowledge across the cultivation operation.

Crop & Climate

Climate strategy, crop balance and climate fine-tuning for the best possible crop performance across different climate zones and production systems.

Nutrition & Fertigation

Crop nutrition, fertilisation and nutrient calculations — from developing fertilisation strategies to creating practical recipes.

Energy Management

Understanding the relationship between energy use, gas, electricity costs, production and returns.

Production Planning

Production forecasting and planning based on crop development, climate, light and expected production.

Young Plant & Nursery Follow-up

Follow-up from propagation to the greenhouse, including collaboration with plant nurseries to support strong starting material and crop quality.

Grower Development

Training and mentoring growers, helping them develop practical knowledge, crop understanding and confidence in cultivation decisions.

Roel Klap inspecting a greenhouse crop
People behind the crop

Your crop. Your team. Your results.

A strong crop starts with a strong team.

I work alongside cultivation teams in the greenhouse, sharing practical knowledge and helping people understand what they see, why it happens and how to respond.

The goal is not just to improve the crop today, but to build knowledge that stays within the team.

International knowledge

International expertise. Shared knowledge.

Working with an international network of experienced consultants, bringing the right expertise to the right situation. This allows us to combine different areas of knowledge and experience, creating a broader perspective while keeping the focus on practical solutions that work in the greenhouse.

Collaboration

The right expertise for the right situation.

Bringing together knowledge, experience and different perspectives to support growers and cultivation teams across Europe.

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