American Smoketree (Cotinus obovatus)

American Smoketree

Cotinus obovatus

Its smoke-like inflorescences paint summer skies in soft pink. Deciduous ornamental shrub or small tree; common name: American smoke bush.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; full sun enhances foliage and inflorescence color intensity
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Watering Water deeply when top 5–7 cm of soil is dry; tolerate moderate drought once established
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Temperature Hardy to -20°C; withstands hot summer temperatures with adequate moisture
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Characteristics

  • Leaf: Oval to obovate leaves, blue-green to purple, turning scarlet in autumn
  • Inflorescence: Dense, hair-like plume clusters (smoke-like) after flowering
  • Stem: Smooth, light brown bark; multi-branched growth habit
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Care Guide

Watering

Keep soil evenly moist during active growth; avoid waterlogging

Fertilization

Apply balanced slow-release fertilizer once. Over-fertilization can reduce foliage color intensity; use low-nitrogen formula if needed

Banana peel compost tea:Compost banana peels for 2–3 months, dilute 1:20 for root drench; avoid raw peels to prevent pest infestations
Pruning
  • Prune in late winter to remove dead, damaged, or crossing branches
  • Thin dense growth to improve airflow and light penetration
  • Cut back older stems to encourage new, vibrant foliage growth
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA verified non-toxic; no harmful effects on cats from ingestion or contact

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

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Garden Uses & Culture

Culture: Symbolizes transformation and gentle beauty due to seasonal foliage color shifts

Usage: Ornamental landscape plant; cut inflorescences for dried floral arrangements