Jack Bean

Canavalia ensiformis, Fabaceae

Zones

8–12

Layer

Ground Cover

Lifespan

Annual

Growth

Fast

Guild Roles

Nitrogen FixerGround Cover

Growing Conditions

Sun

Full Sun (optimal)

Water

Moderate

Soil pH

5.5 – 7.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Upland CottonGossypium hirsutum

Nitrogen FixationPest Deterrent

Kentucky BluegrassPoa pratensis

Nitrogen Fixation

Perennial RyegrassLolium perenne

Nitrogen FixationPhysical Support

ZoysiaZoysia japonica

Nitrogen Fixation

Crown VetchSecurigera varia

Nitrogen FixationBeneficial Insect Habitat

Antagonistic Plants

Miners LettuceClaytonia perfoliata

Large vigorous jack bean can overwhelm small delicate miners lettuce

Uses

Functions

Nitrogen Fixation

Edible Parts

Seeds

Common Questions

What zones does Jack Bean grow in?

Jack Bean grows in USDA hardiness zones 8 through 12.

Is Jack Bean a nitrogen fixer?

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

What are good companion plants for Jack Bean?

Good companions for Jack Bean include Upland Cotton, Kentucky Bluegrass, Perennial Ryegrass, Zoysia, Crown Vetch.

Design guilds with Jack Bean and see companion relationships visually.

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