While growing peas, problems can arise if you are not careful about crop rotation. Although peas are a famously low-maintenance plant, they must be moved to a new garden bed at least every five years. Regular crop rotation will prevent a host of problems including pests, diseases and rot. Rather than worrying about how to fight these problems in your plants, it’s much easier to regularly rotate your crops. To ensure healthy plants and nutrient dense soil, rotate all of the crops in your garden every two years.
Another way to avoid problems with your pea plants is to make sure you time their harvest for a cool season. Peas grow best when they are planted in late winter or late summer. If your peas experience prolonged hot weather they are more susceptible to powdery mildew. This white fungal coating will appear on your pea plants and suck the nutrients out of them. If you notice any powdery mildew developing on your pea plants, cut off the sick vines and dispose of them far away from your garden.
Find more tips for growing peas in this article from Organic Gardening.