Snow Pea

Snow peas are direct-sown in spring as soon as the ground can be worked, since seed germinates across a wide range of 40 to 85°F and young plants tolerate moderate frost. Sow seed 1 to 2 inches deep and roughly 1.5 to 3 inches apart, in well-drained soil of average fertility with a pH between about 5.5 and 7.0, sited in full sun.

Keep the soil evenly moist, supplying about an inch of water a week and applying it to the soil rather than overhead to limit disease, but avoid heavy watering during flowering since it can interfere with pod set. High-nitrogen fertilizer should be avoided, as it favors leafy growth over flowering and podding, and inoculating seed with rhizobium bacteria is worthwhile where peas have not previously grown in the plot.

Taller, vining plants need support such as stakes, netting, or a trellis set in place at planting time rather than later, which also improves airflow around the foliage and helps limit disease.

Seed can rot and seedlings can damp off if sown into cold, wet soil, so timing sowing to conditions rather than the calendar reduces losses. Cutworms sever young shoots, aphids can spread disease even though they rarely trouble the pods directly, and seedcorn maggots are drawn to gardens with heavy manure or organic matter worked into the soil.

Powdery mildew can develop in hot weather and affects both leaves and pods, while root rot and fusarium wilt are common soilborne problems that cause roots and whole plants to wilt and die; avoiding wet foliage, spacing plants for airflow, and rotating planting sites help limit these.

Snow pea pods are picked young and tender, typically about 2 to 3 inches long and still flat, generally within 5 to 7 days of flowering before the seeds inside fill out. Picking regularly and removing any pods missed on earlier passes keeps plants productive, since quality declines quickly once pods are left to mature.

Because flavor and texture fade rapidly after picking, pods are best used close to harvest; in the meantime they can be kept in plastic bags in the refrigerator.

Snow peas are grown for their whole edible pods, eaten pod and seed together rather than shelled, and are a common ingredient in Asian cooking.

Pisum sativum is native to Eurasia and was domesticated by Neolithic farmers in the Near East at least 8,000 to 9,000 years ago. From that origin the species spread into cultivation across temperate regions worldwide, and edible-podded types such as the snow pea developed within it alongside shelling and snap forms.