American Yellowwood (Cladrastis kentukea)

American Yellowwood

Cladrastis kentukea

Its canopy unfurls like a golden umbrella in bloom, softening summer light. Deciduous flowering tree; common name: Yellowwood.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; prefers morning sun with afternoon shade in hot, arid regions to prevent leaf scorch
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Watering Water deeply when the top 15–20 cm of soil dries out; avoid frequent shallow watering
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Temperature Hardy to USDA zones 4–8; tolerates cold winters and moderate summer heat
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Characteristics

  • Leaf: Pinnately compound, bright green leaves turning golden yellow in fall; 15–30 cm long.
  • Flower: Fragrant white, pea-like blossoms in drooping panicles 15–30 cm long.
  • Stem/Bark: Smooth, gray-brown bark; young stems have a faint green tint.
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Care Guide

Watering

Water deeply every 7–10 days during dry spells to support flowering

Fertilization

Apply balanced slow-release fertilizer once in early spring. Use a low-nitrogen fertilizer to promote flowering rather than excessive foliage growth

Composted banana peel tea:Soak fully composted banana peels in water for 3 days, dilute 1:20 with water for root drench; discard solid peels to avoid pest infestations
Pruning
  • Prune dead, damaged, or crossing branches in late winter to early spring before new growth emerges
  • Thin crowded inner branches to improve airflow and light penetration
  • Remove suckers at the base to maintain a single, dominant trunk form
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA-verified non-toxic to cats

Humans: No known toxic effects on humans

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Garden Uses & Culture

Culture: Symbolizes resilience and graceful aging in American horticultural contexts

Usage: Ornamental shade tree; nectar source for bees and butterflies