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Caucasian Comfrey

Symphytum caucasicum, Boraginaceae

Zones
4–9
Layer
Herbaceous
Lifespan
Perennial
Growth
Fast

Guild Roles

Dynamic AccumulatorMulch MakerGround Cover

Growing Conditions

Sun

Partial Shade (preferred)Full Sun (tolerated)

Water

Moderate (established)High (seedling)

Soil pH

6 – 7.5

Tolerances

Drought
Frost
Heat
Pest Resistance
Disease Resist.

Companion Plants

Field PennycressThlaspi arvense
Nutrient Accumulation
Blue ShamrockParochetus communis
Nitrogen FixationNutrient Accumulation
Giant SpurrySpergula maxima
Nutrient AccumulationBeneficial Insect HabitatNurse Plant
Marsh PeaLathyrus palustris
Nitrogen FixationNutrient AccumulationBeneficial Insect Habitat

Antagonistic Plants

Tall Scurf-peaCullen australasicum

Comfrey produces alkaloids that may inhibit legume growth and nitrogen fixation

Uses

Functions

Dynamic AccumulationMulch ProductionSoil ImprovementDeep Soil Mining

Medicinal Uses

Wound HealingAnti-Inflammatory

Common Questions

What zones does Caucasian Comfrey grow in?

Caucasian Comfrey grows in USDA hardiness zones 4 through 9.

What are good companion plants for Caucasian Comfrey?

Good companions for Caucasian Comfrey include Field Pennycress, Blue Shamrock, Giant Spurry, Marsh Pea.

Design guilds with Caucasian Comfrey and see companion relationships visually.

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