Prickly Comfrey

Symphytum asperum

Native to:
Iran, North Caucasus, Transcaucasus, Türkiye

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Boraginaceae
Genus:
Symphytum
Species:
Symphytum asperum
USDA Symbol:
SYAS

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Forb/herb
Height:
150 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
may,jun,jul,aug
Bloom Colors:
blue, pink, purple

Garden & Ecology Notes

Wildlife Value:
bees, bumblebees
Deer Resistant:
Yes

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 7.5 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
native to moist, fertile areas in Caucasus

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–42 days
Notes:
Seeds germinate best with cold stratification. Can also be propagated easily by root division.

The above propagation data sourced from Claude AI