Cut-leaved Self-heal (Prunella laciniata)

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Sunlight Full sun to partial shade; performs best in open meadow or rock garden conditions

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Watering Water deeply when top 2 cm of soil dries out; drought-tolerant once established

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Temperature Hardy to -15°C; withstands hot summer temperatures with occasional deep watering

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Leaf: Deeply lobed, lanceolate to ovate leaves with serrated margins; soft fuzzy texture
Flower: Dense terminal spikes of purple to lavender tubular flowers; paired pointed bracts
Stem: Square, hairy stems typical of mint family; upright to spreading growth form

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Watering

Keep soil evenly moist during active growth and flowering

Fertilization

Diluted organic feed once monthly. Use low-nitrogen feed to promote compact growth and abundant flowering

Eggshell powder topdress：Crush dried eggshells into fine powder; sprinkle lightly on soil surface to boost calcium levels without burning roots

Pruning

Deadhead spent flower spikes to encourage prolonged blooming and prevent self-seeding
Trim back foliage in late autumn to tidy clumps and prepare for winter dormancy
Thin overcrowded clumps in early spring to improve airflow and reduce disease risk

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no reported toxicity

Humans: Non-toxic to humans; no known adverse effects from ingestion or contact

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Culture: N/A

Usage: Ornamental groundcover; traditional medicinal uses for minor wound care and sore throats