Red bell peppers.

Red bell pepper is the reference block pepper of Dutch production: a four-lobed blocky fruit carried on the plant until it colours fully. Ripening on the plant is what the buyer pays for, and it is also what the crop costs — the fruit occupies the plant for weeks after it has reached full size, consuming light and heat that a green harvest would have released.

What the crop needs

The plant is long-cycle, grown on substrate and carried on a high wire, with a heavier fruit and a slower set than cucumber. It responds to the balance between vegetative and generative growth over weeks, so the climate strategy is judged across a season rather than a day. Holding a steady relationship between temperature and accumulated light is what produces a continuous set instead of alternating flushes and pauses.

What the greenhouse has to do

Carrying fruit to ripe colour is what the house is being asked to pay for. The fruit sits on the plant for weeks after it has reached full size, occupying plant capacity and greenhouse capacity while it colours. That time is heated, screened and lit as though it were growth, so the heating design and the screening strategy for a red crop are set against the colouring period rather than against the setting period.

Pepper is also a set-sensitive crop. Fruit set stalls when the plant runs too warm or too dry at the wrong moment, and the gap that creates travels down the season as an uneven harvest rhythm. Steady climate across the whole floor, ventilation that answers quickly and irrigation with buffer for the peak are what keep the rhythm regular.

DutchGreenhouses® specifies the structure, climate, screening and irrigation around the pepper crop, its harvest stage and the local climate, so fruit reaches ripe colour on schedule. Get in touch to plan a pepper greenhouse.