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Rock Buckthorn

Rhamnus saxatilis, Rhamnaceae

Zones
5–8
Layer
Shrub
Lifespan
Perennial
Growth
Slow

Guild Roles

WindbreakPollinator Attractor

Growing Conditions

Sun

Full Sun (preferred)Partial Shade (tolerated)

Water

Low (established)Moderate (seedling)

Soil pH

6.5 – 8.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Tufted Horned RampionPhysoplexis comosa
Physical SupportWind Protection
Round-leaved HelleboreHelleborus cyclophyllus
Wind ProtectionBeneficial Insect Habitat

Antagonistic Plants

Arrow-jointed BroomGenista sagittalis

Rhamnus species produce anthraquinones and other compounds that can inhibit legume nodulation and growth

Uses

Functions

Hedgerow PlantErosion ControlTraditional Medicine

Edible Parts

Berries

Medicinal Uses

LaxativeDigestive Aid

Common Questions

What zones does Rock Buckthorn grow in?

Rock Buckthorn grows in USDA hardiness zones 5 through 8.

What are good companion plants for Rock Buckthorn?

Good companions for Rock Buckthorn include Tufted Horned Rampion, Round-leaved Hellebore.

Design guilds with Rock Buckthorn and see companion relationships visually.

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