Dwarf Buckthorn (Rhamnus pumila)

Dwarf Buckthorn

Rhamnus pumila

Low-growing evergreen shrub with dense foliage, ideal for rock gardens. Dwarf buckthorn.

Full sun
1/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; tolerates exposed rocky sites with direct sunlight for most of the day
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Watering Drought-tolerant once established; water deeply but infrequently, allowing soil to fully dry between waterings
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Temperature Hardy to cold winter temperatures down to -15°C; tolerates summer highs up to 30°C
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Characteristics

  • Leaf: Small oval evergreen leaves, dark green above, paler beneath, with smooth margins
  • Flower: Tiny greenish-yellow inconspicuous flowers in axillary clusters
  • Stem: Slender woody stems forming a dense low mat
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Care Guide

Watering

Water occasionally during prolonged dry spells to prevent wilting

Fertilization

Optional light feed with diluted organic fertilizer once in early spring. No regular fertilization is required for established plants

Eggshell powder top-dress:Crush dried eggshells into fine powder; sprinkle lightly on soil surface to add calcium without over-fertilizing; avoid direct contact with stems
Pruning
  • Trim back overgrown stems in late winter to maintain compact mat form
  • Remove dead or damaged branches to improve airflow and reduce disease risk
  • Thin dense growth occasionally to prevent overcrowding and promote even foliage
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA does not list this species as toxic to cats; no confirmed adverse effects

Humans: Ingestion of large quantities may cause mild gastrointestinal distress due to anthraquinone compounds

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Garden Uses & Culture

Culture: N/A

Usage: Ground cover for rock gardens; erosion control on sloped rocky sites