Sainfoin

Onobrychis viciifolia, Fabaceae

Zones

3–8

Layer

Ground Cover

Lifespan

Perennial

Growth

Moderate

Guild Roles

Nitrogen FixerPollinator Attractor

Growing Conditions

Sun

Full Sun (optimal)

Water

Low

Soil pH

6.5 – 8.5

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

LoquatEriobotrya japonica

Nitrogen FixationBeneficial Insect Habitat

Red CloverTrifolium pratense

Nitrogen FixationBeneficial Insect Habitat

PearPyrus communis

Nitrogen FixationPollinator Sharing

Cup PlantSilphium perfoliatum

Nitrogen FixationPollinator Sharing

Birdsfoot TrefoilLotus corniculatus

Nitrogen FixationPollinator Sharing

ColtsfootTussilago farfara

Nitrogen FixationPollinator Sharing

Antagonistic Plants

Japanese HoneysuckleLonicera japonica

Honeysuckle can suppress beneficial nitrogen-fixing plants like sainfoin, reducing soil improvement

Uses

Functions

Nitrogen FixationFodder

Common Questions

What zones does Sainfoin grow in?

Sainfoin grows in USDA hardiness zones 3 through 8.

Is Sainfoin a nitrogen fixer?

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

What are good companion plants for Sainfoin?

Good companions for Sainfoin include Loquat, Red Clover, Pear, Cup Plant, Birdsfoot Trefoil.

Design guilds with Sainfoin and see companion relationships visually.

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