Why damping down a greenhouse is the ‘easiest and most economical' way of reducing temperatures to avoid damaging plants

Tomato and cucumber plants growing in a greenhouse in summer.

A greenhouse can get incredibly hot during the summer months and it is important to avoid the temperatures getting so high as to damage plants. As well as ventilating the greenhouse and providing shade, damping down the floors is a simple way to prevent plants from getting harmed by extreme heat.

Even heat-loving plants will suffer when the temperatures get too high and exceed 80°F. They can get heat stress, which can cause wilting, defoliation, and leaf scorch while flowering and fruiting can also be badly affected.