Pea Companion Plants
Vegetable60 days to maturity
Peas are a cool-season legume grown for sweet pods and shelling peas, and they fix their own nitrogen through bacteria on their roots. They climb readily with tendrils and crop best in the cool, moist weeks of spring and fall before heat shuts them down. Common troubles include powdery mildew late in the season and aphids that cluster on tender growing tips.
Companion Checker: what grows well with Pea?
Tap any plant to see whether it pairs well with Pea and why. Green means a beneficial companion, red means keep them apart.
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Companion Planting Strategy for Pea
Because peas enrich the soil with nitrogen rather than depleting it, they pair well with crops that appreciate a richer bed and with quick plants that share their cool-season window. Good companions also use vertical or below-ground space the peas leave open, while peas dislike the alliums whose root secretions hinder legume growth.
Best Companion Plants for Pea
These plants grow well alongside Pea — providing pest control, attracting pollinators, or making better use of your garden space.
Carrots grow down into the soil while peas climb upward, using different layers, and the nitrogen peas leave behind benefits the following root crop.
Radishes mature quickly between pea plantings, loosen the soil, and act as a trap crop that lures leafminers and beetles away from the peas.
Corn provides a natural trellis for climbing peas while the peas fix nitrogen that the heavy-feeding corn readily uses.
What Not to Plant With Pea
Keep these away from Pea. They compete for resources, attract shared pests, or inhibit each other's growth.
How to Grow Pea
- Botanical name
- Pisum sativum
- Family
- Legume (Fabaceae)
- Sun
- Full sun to part shade, 6+ hours; tolerates cool partial shade
- Water
- 1-1.5 inches per week, keeping soil evenly moist
- Soil
- Well-draining, fertile loam, pH 6.0-7.5
- Spacing
- 1-2 inches apart; rows 18-24 inches, or double rows along a trellis
- Planting depth
- Sow seed 1-1.5 inches deep
- Germination
- 7-14 days at 40-75F (faster in warmer soil)
- Days to maturity
- 55-70 days from sowing
- When to plant
- Direct sow 4-6 weeks before the last spring frost, as soon as soil can be worked; sow again in late summer for fall
- Harvest
- Pick snap and snow pods young and tender; pick shelling peas when pods are plump but still bright; harvest often to keep plants producing
Common Pea Problems
Powdery mildew (white powdery coating on leaves in warm, dry late season)
Plant early, choose resistant varieties, space for airflow, and spray a potassium bicarbonate or diluted milk solution at first signs.
Aphids (clusters of small insects on shoot tips and undersides of leaves)
Blast off with water, encourage ladybugs and lacewings, and use insecticidal soap on heavy infestations; aphids also spread pea enation mosaic virus.
Root rot and damping-off (seeds or seedlings collapsing in cold, wet soil)
Avoid sowing into cold soggy soil, improve drainage, do not overwater, and rotate peas out of the same bed for several years.
Poor pod set in heat (flowers drop once temperatures climb)
Time plantings for cool weather, provide afternoon shade in warm spells, and keep moisture steady since peas stop setting once days regularly exceed 80F.
Pea Companion Planting FAQ
What are the best companion plants for peas?
Carrots and radishes share the cool season and use different soil layers, while corn gives climbing peas a living trellis and soaks up the nitrogen they fix. Leafy greens, cucumbers, and beans also benefit from the nitrogen peas add to the bed.
What should you not plant with peas?
Keep peas away from onions, garlic, and other alliums, whose root secretions suppress the rhizobia bacteria peas depend on to fix nitrogen. Crowding them with alliums tends to stunt growth and reduce pod yield.
When should I plant peas?
Direct sow peas 4-6 weeks before your last spring frost, as soon as the soil can be worked, and again in late summer for a fall crop. They germinate in cool soil and crop best before summer heat arrives.
Do peas need a trellis?
Tall and vining types climb to 4-6 feet and need a trellis, netting, or a corn-style support, while bush and dwarf varieties stay around 2-3 feet and can be grown with minimal support. Even short types crop cleaner and are easier to pick with something to lean on.
More vegetable companions
Plan Your Pea Garden
Use our interactive tools to design the perfect garden with Pea and its companions.