American Yellowwood
Cladrastis kentukea · Deciduous, Broadleaf, Hardwood
Plant Family
Fabaceae
Tree Category
Flowering Ornamental, Shade Tree
Variety / Cultivar
Not specified; likely species Cladrastis kentukea
Hardiness Zones
USDA Zones 4-8; adaptable to urban conditions and various pH levels.
About This Tree
A medium-sized deciduous tree with a broad, rounded, spreading crown. Known for its intense fragrant white flowers and smooth bark. It has a moderate growth rate and a vase-like branching structure when young.
Leaf Characteristics
Pinnately compound leaves, 8-12 inches long with 7-11 leaflets arranged alternately. Leaflets are ovate and bright green, turning a brilliant yellow to gold in autumn.
Bark Characteristics
Smooth and gray, very similar to beech bark; may become slightly fissured or platy on very old specimens.
Growing Information
Origin Region
Southeastern United States; especially Kentucky, Tennessee, and North Carolina
Growing Season
Leafs out in late spring; flowers in May/June (often biennially); fruits in late summer; enters dormancy after gold/yellow fall display
Sunlight & Water Needs
Full sun preferred; moderate water needs once established; well-drained soil is essential; moderately drought tolerant.
Mature Size
Height of 30-50 feet with a similar spread of 40-55 feet; lifespan of 50-100 years.
Special Characteristics
Highly fragrant pea-like white flower panicles; wood contains a yellow dye; beautiful fall color; largely pest and disease resistant.
Wildlife & Ecology
Flowers are a major nectar source for bees and other pollinators; provides nesting sites for songbirds; nitrogen-fixing properties like most legumes.