Smooth Sumac (Rhus glabra)

Smooth Sumac

Rhus glabra

Its fiery autumn foliage blazes like sunset over dry hills. Deciduous shrub; common name: scarlet sumac.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; full sun encourages the most vibrant autumn foliage color
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Watering Water deeply once weekly during extended dry spells; drought-tolerant once established
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Temperature Hardy to -30°C; adapts well to hot, dry summer conditions
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Characteristics

  • Leaf: Pinnately compound leaves with 11–31 lanceolate leaflets; glossy green in summer, turning bright red in autumn
  • Flower: Dense, upright panicles of tiny greenish-yellow flowers
  • Fruit: Dense clusters of red, fuzzy drupes persisting through winter
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Care Guide

Watering

Water deeply during prolonged dry periods; avoid overwatering to prevent root rot

Fertilization

Optional light, balanced feed once in early spring. Avoid over-fertilization, as it can reduce autumn foliage vibrancy

Crushed eggshell topdressing:Sprinkle a thin layer of finely crushed eggshells around the base; avoid direct contact with stems to prevent rot
Pruning
  • Remove dead or damaged branches in late winter before new growth emerges
  • Thin overcrowded stems to improve airflow and light penetration
  • Cut back suckers to control spread in managed garden settings
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

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

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

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Garden Uses & Culture

Culture: Symbolizes resilience and vibrant autumnal beauty in native North American landscapes

Usage: Ornamental foliage plant; winter fruit clusters provide food for birds and small wildlife