Small Caterpillars feed mainly on the underside of leaves, as they get larger they spread over the plant making bigger holes in the leaves and leave excrement on the plant.

Since the withdrawal of the natural bacteria, Bacillus thuringiensis, from sale in garden centres, there has been no effective natural control of caterpillars available. JUST GREEN can now offer a nematode, which attacks caterpillars.

The nematodes are sprayed or watered onto the plants infected with caterpillars, unlike other nematode treatments, where they are watered into the soil or compost. The nematodes need to come into direct contact with the caterpillars quickly as they will die if left to dry out on the leaf. Once the nematodes come into contact with the caterpillars, they will enter through a natural body opening. When they are inside they release a bacteria, the caterpillar dies within a few days. JUST CATERPILLAR KILLER is more effective against small caterpillars, so apply soon after observation of caterpillars.