The first crops nearly always miss the pea moth, which usually arrives late in the season, in July. Sow thickly to allow for the inevitable poor germination of these early sowings in the colder temperatures. Late-sown crops, which flower after July, also miss the pea moth, but tend to get mildew instead. The moth can be excluded by putting a barrier of horticultural fleece over the pea plants. This is obviously easiest to do with the shorter varieties of pea, though it may cause problems with mould in wet conditions.
Crop rotation is essential, as the moth usually overwinters in the soil right underneath the plants.
Likewise, hygiene helps. All unwanted pea pods and haulm should be gathered and disposed of as soon as the crop is harvested, to avoid infesting the soil. A tip when cooking is to rinse the podded peas in salty water to make the maggots leave. More expert advice on pests and diseases . For specialist advice, send your questions to our team.