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Flat Pea

Lathyrus sylvestris, Fabaceae

Zones
4–8
Layer
Herbaceous
Lifespan
Perennial
Growth
Fast

Guild Roles

Nitrogen FixerGround CoverMulch Maker

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

Moderate (established)High (seedling)

Soil pH

6 – 7.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Sea PeaLathyrus japonicus
Nitrogen FixationPhysical Support
Mountain RyeSecale montanum
Nitrogen FixationPhysical Support
Splitbeard BluestemAndropogon ternarius
Nitrogen FixationPhysical Support

Antagonistic Plants

Fo-tiPolygonum multiflorum

Fo-ti's extensive root system can outcompete flat pea for soil nutrients and water

Uses

Functions

Nitrogen FixationErosion ControlBiomass ProductionWildlife HabitatSoil Improvement

Edible Parts

SeedsYoung Pods

Common Questions

What zones does Flat Pea grow in?

Flat Pea grows in USDA hardiness zones 4 through 8.

Is Flat Pea a nitrogen fixer?

Yes, Flat Pea is a nitrogen fixer and can help provide nitrogen to neighboring plants in a guild or polyculture.

What are good companion plants for Flat Pea?

Good companions for Flat Pea include Sea Pea, Mountain Rye, Splitbeard Bluestem.

Design guilds with Flat Pea and see companion relationships visually.

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