Greenly

How to grow Peas

Pisum sativum · garden peas, sugar snap peas, snow peas

Cool-season legumes that produce edible pods or seeds. They are nitrogen-fixing plants that prefer moist, cool weather.

Peas
Photo: Bill Ebbesen, CC BY-SA 3.0, Wikimedia Commons

Quick facts

TypeVegetable
FamilyFabaceae
LightFull sun
Soil pH6–7.5
Frosttolerates light frost
Soil for sowingfrom 4 °C
Germination14 days
Seedlings ready40 days
Sowing to harvest70 days
Where it growsGreenhouse, Open ground, At home

When to plant

Sow for seedlings about 8 weeks before planting out.

It tolerates light frost: plant out in open ground about three weeks before your last spring frost.

In an unheated greenhouse everything moves about three weeks earlier.

The first harvest comes about 70 days after the shoots appear.

Frost dates · When to plant

Care

Greenhouse

StageWateringTemperatureFeeding
Germinationevery 3 days10…20 °C—
Seedlingsevery 3 days12…22 °C—
Growthevery 4 days12…22 °Cnitrogen, 14 days into the stage
Floweringevery 3 days12…22 °Cphosphorus and potassium, at the start of the stage
Fruitingevery 2 days12…22 °Cpotassium, 14 days into the stage
Harvestevery 3 days10…22 °C—

Open ground

StageWateringTemperatureFeeding
Germinationevery 5 days4…18 °C—
Seedlingsevery 4 days5…20 °C—
Growthevery 6 days5…20 °C—
Floweringevery 4 days5…20 °Cphosphorus and potassium, at the start of the stage
Fruitingevery 3 days5…20 °Cpotassium, 14 days into the stage
Harvestevery 5 days4…20 °C—

At home

StageWateringTemperatureFeeding
Germinationevery 3 days15…22 °C—
Seedlingsevery 3 days15…22 °C—
Growthevery 4 days15…22 °Cbalanced (NPK), 14 days into the stage
Floweringevery 3 days15…22 °Cphosphorus and potassium, at the start of the stage
Fruitingevery 2 days15…22 °Cpotassium, 14 days into the stage
Harvestevery 3 days15…22 °C—

Growing notes

Light

Full sun is ideal, though they can tolerate light afternoon shade in very hot climates.

Soil

Well-draining, loamy soil. Avoid high-nitrogen fertilizers early on to prevent excessive leaf growth over pod production.

Care

Provide a trellis or netting for climbing varieties to keep pods off the ground. Water consistently during flowering and pod set to prevent blossom drop. Harvest frequently to encourage continued production.

How to tell it is ripe

  • Shelling peas are at their best when the pods are swollen and round but still green.
  • Snow peas are ready at full length while the pods are still flat; snap peas as soon as the pods start to fatten.
  • Over-mature pods turn yellowish and the peas inside go hard and starchy.
  • A ready shelling-pea pod feels firm and full when squeezed.
  • Snap-pea pods that have turned tough and stringy are over-mature; shell them like garden peas.
  • Pick every one to three days and shell and cook the peas soon after, because their sweetness fades quickly.

Pests and diseases of Peas

  • Fusarium Wilt
  • Pea moth
  • White mould (Sclerotinia)

Sources

Figures cited from these sources.

  1. extension.illinois.edu/gardening/peas
  2. hgic.clemson.edu/factsheet/harvesting-vegetables/
  3. extension.illinois.edu/blogs/good-growing/2024-06-28-harvesting-vegetables-when-and-how-pi