Scotch Heather 'Kerstin' (Calluna vulgaris 'Kerstin')

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Sunlight Full sun to partial shade; thrives in bright morning sun with mild afternoon shade in hot summer climates

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Watering Water deeply when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot

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Temperature Hardy to -15°C; protect from extreme summer heat above 28°C to prevent leaf scorch

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Leaf: Tiny, scale-like evergreen leaves arranged in opposite pairs along woody stems
Flower: Dense spikes of bell-shaped pale pink blooms covering upper stems
Stem: Woody, branching stems forming a tight, compact mounded form

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Watering

Keep soil consistently moist but not waterlogged; increase watering during prolonged dry spells

Fertilization

Apply diluted acidic fertilizer once monthly. Use fertilizer formulated for acid-loving plants to maintain soil pH

Composted pine needle tea：Steep fully composted pine needles in water for 24 hours; dilute 1:20 for root drench to maintain acidic soil pH

Pruning

Trim faded flower spikes in late autumn to encourage dense new growth the following season
Thin overcrowded stems in early spring to improve airflow and reduce disease risk
Shape lightly after flowering to maintain a compact, mounded habit

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified 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: Symbolizes good luck and admiration in traditional European folklore

Usage: Ornamental groundcover for rock gardens, border edging, and container displays