Plant

Snap Pea

Pisum sativum var. macrocarpon

Also known as: sugar snap pea, edible-pod pea

A variety of garden pea (*Pisum sativum*) whose entire pod is edible — sweet, crisp, with both pod and peas eaten together. Developed in the 1970s by Calvin Lamborn at Gallatin Valley Seed Co., crossing snow peas (flat-podded) with shell peas (round, with thick walls) to produce the modern sugar snap pea. Cool-season crop direct-seeded in early spring; matures in 60–75 days; cut-and-come-again harvest over 2–3 weeks. Among the most-rewarding home-garden crops in the cool-season window.

The sugar snap pea is a 1970s invention. Before Calvin Lamborn’s breeding work, you had snow peas (flat pod, tender, the whole pod eaten) and shelling peas (round pod, thick wall, only the inner peas eaten). Lamborn crossed them and created a third form: a round-podded pea where both pod and peas are sweet, crisp, and edible together. It is one of the few crops that genuinely improves on its ancestors.

For a home gardener, snap peas are also one of the most-rewarding spring crops. Direct-seed in late winter or early spring, harvest 60–75 days later, eat them off the vine straight in the garden.

How to grow

Direct seed 3–4 weeks before last frost in cool, workable soil
Sow depth: 1–2 inches
Spacing: 2–3 inches in rows; rows 18–24 inches apart
Germination: 7–14 days in cool soil
Soil: average garden soil; doesn’t need rich N; well-drained
Inoculate with rhizobium the first time in a new bed
Trellis required: snap peas climb 4–6 feet; provide netting, string, or cattle panel
Water: consistent moisture during flowering and pod set

Harvest

Pick when pods are full but still bright green and tender — 60–75 days from planting
Pick daily during peak production — missed picks become starchy and reduce subsequent flower set
Harvest window: 2–3 weeks, then plants decline as temperatures warm
Yield: a well-grown row produces 1–2 pounds per 10 row-feet across the season

Climate notes

Strict cool-season crop: pea production stops when temperatures regularly exceed 75°F
Spring planting: ideal in temperate climates; sow as early as soil can be worked
Fall planting: viable in cool-summer climates and milder fall climates (zones 6+)
Doesn’t tolerate heat: pulled and beds turned over by midsummer in most climates

Varieties

Sugar Snap (Lamborn’s original) — the classic; vigorous, productive, sweet
Super Sugar Snap — improved variant; more disease-resistant
Sugar Ann — bush-type; doesn’t require trellis; smaller; faster to harvest
Cascadia — bush-type; widely-adapted
Magnolia Blossom — purple flowers (pollinator attractor); pinkish pods
Sugar Lace II — productive modern variety

Pests and disease

Aphids on tender new growth
Powdery mildew in late season as warm weather approaches; resistant varieties help
Root rot in cold wet soils; don’t plant in waterlogged ground
Pea weevil (occasional); larvae develop inside the dried pea; affects seed saving more than fresh eating

In the kitchen

Fresh off the vine — the canonical use; eaten whole, raw
Lightly blanched and chilled for salads
Stir-fried with garlic and ginger
Steamed briefly as a side
Sliced into salads raw

Sources

Calvin Lamborn’s seed-breeding records; Gallatin Valley Seed Co. archive
Seed to Seed by Suzanne Ashworth (Seed Savers Exchange)

Rooted in life.

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Practical

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Shelling Pea shelling, snap, and snow peas are forms of *Pisum sativum* differing in pod structure

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