Heather (Calluna vulgaris)

Heather

Calluna vulgaris

Tiny bell blooms carpet low hills with soft purple haze. Low-growing evergreen shrub; common names: Heather, Ling.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; thrives in bright direct sunlight for abundant flowering; tolerates light shade in hot climates
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Watering Water deeply when the top 2–3 cm of soil is dry; avoid overwatering to prevent root rot in poorly drained soils
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Temperature Hardy to -15°C; tolerates cool to mild warm temperatures; avoid prolonged exposure to heat above 28°C
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Characteristics

  • Leaf: Small, scale-like evergreen leaves arranged in opposite pairs along woody stems
  • Flower: Tiny bell-shaped blooms in terminal clusters; colors range from white to pink, purple, or deep red
  • Stem: Slender, branching woody stems forming tight, low-growing mats
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Care Guide

Watering

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

Fertilization

Diluted acidic fertilizer once monthly. Use low-nitrogen, acidic fertilizer to support flowering without promoting excessive foliage growth

Eggshell powder peat tea:Crush dried eggshells into fine powder, steep in soaked peat moss water for 24 hours; dilute 1:20 for root drench to maintain soil acidity and add mild nutrients
Pruning
  • Prune back spent flower stems to 2–3 cm above woody growth in late autumn to encourage dense new spring growth
  • Thin overcrowded stems in early spring to improve airflow and reduce fungal disease risk
  • Trim to maintain desired mounding shape in early spring before new foliage emerges
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA confirmed non-toxic to cats; no reported adverse health effects

Humans: No known toxicity to humans; safe for handling and accidental ingestion of small amounts

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Garden Uses & Culture

Culture: Symbolizes good luck and protection in Scottish folklore; closely tied to moorland cultural identity

Usage: Ornamental groundcover for rock gardens; used in dried floral arrangements; supports local honey production via pollinator attraction