Prickly comfrey (Symphytum asperum)

Prickly comfrey

Symphytum asperum is a flowering plant of the genus Symphytum in the family Boraginaceae. Common names include rough comfrey and prickly comfrey. It is native to Asia and it is known in Europe and North America as an introduced species and sometimes a weed.

Scientific classification

Species

Prickly comfrey (Symphytum asperum)

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Spring, Summer

Bloom Time

61 cm to 1.2 m

Plant Height

Green

Leaf Color

Purple, Pink, Green, Blue

Flower Color

Evergreen

Leaf type

5 - 32 ℃

Ideal Temperature

Images of Prickly comfrey

Distribution of Prickly comfrey

Distribution Map

Prickly comfrey is a plant native to the Western Asian and Eastern Mediterranean regions. Its range has since expanded, and it is now introduced and cultivated in various temperate regions across Europe, parts of Northern Asia, the Pacific Islands, and North America. This plant has acclimatized and is often found in the wild outside its native range.

Native

Cultivated

Invasive

Introduced

No species reported

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Care Guide for Prickly comfrey

Every 1-2 weeks

Water

Partial sun

Sunlight

5 - 32 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Prickly comfrey flourishes in environments resembling its native habitat with well-draining soil and intermittent rains. It exhibits moderate drought tolerance, requiring watering every 1-2 weeks with slight drying in between. Best grown outdoors, prickly comfrey benefits from mulching to maintain moisture during the growing season.

Fertilize: For prickly comfrey, use balanced fertilizers to promote growth. Apply slow-release granules in spring and mid-summer, and complement with liquid feed during active growth. Adjust feeding in fall and winter to prevent frost damage. Water prickly comfrey before and after fertilization for optimal nutrient absorption.

Pruning: Prickly comfrey features coarse hairy leaves and bell-shaped flowers. Early to late spring pruning removes dead stems and controls self-seeding. Cutting back to the basal rosette rejuvenates growth. Regular pruning maintains shape and vibrancy. Always use clean, sharp tools to avoid disease.

Propagation: Prickly comfrey is a vigorous perennial that spreads quickly. Effective propagation occurs through division, separating healthy root clumps during active growth. Each division must retain roots and a bud for vitality. Proper planting depth and regular watering are essential for root establishment.

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