Tomato.

The crop the modern glasshouse was built around

Tomato is the reference crop of Dutch protected horticulture, and most of what a modern greenhouse does was worked out on it. Year-round supply, high-wire cultivation, carbon dioxide dosing, screening strategy and recirculating irrigation all matured on tomato before they moved to other crops. A buyer entering tomato is entering the most documented crop in the sector, which means the design questions are well understood and the competition is experienced.

The plant is a long-cycle, indeterminate fruiting vegetable grown on substrate and carried on a high wire. It is planted once and harvested for most of the year, so the greenhouse is not sized for a peak week but for a continuous rhythm of setting, ripening and picking. Because the crop is in place for so long, the structure and the climate system carry the whole season rather than a short window, and a shortcoming in either compounds across every truss the plant sets.

What splits the commercial types is fruit size and how the fruit is sold. Truss tomato is harvested on the vine as a cluster and is the Dutch export standard. Cherry and cocktail are smaller-fruited market classes with their own plant load, harvest labour and quality expectations. Beef is a large-fruited class with a different truss structure entirely. The climate recipe is shared at species level, but plant load, harvest interval and saleable yield are not transferable between the types, and treating them as one crop is where projected yields go wrong.

DutchGreenhouses® specifies the structure, climate control, screening and irrigation together around the tomato type, its market and the local climate, so the envelope suits the fruit being sold rather than tomato in general. Get in touch to plan a tomato greenhouse for your market.