Boone County Arboretum
9190 Camp Ernst Road
Union, Kentucky 41091
Phone: (859) 384-4999
Fax: (859) 384-6888
arboretum@boonecountyky.org

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Cultural Details for Cladrastis kentukea

Common Name:
American Yellowwood

Growth Rate:
Medium, 9-12' over an 8-10 year period, will grow considerably faster with adequate water and fertilizer. Low branching tree with a broad, rounded crown of delicate branches.

Average Mature Height:
30-50'

Average Mature Width:
40-55'

Flower Details:
Perfect, White, Fragrant 1-1.25" long; borne in terminal panicles 8-14" long, 4-6" wide at base, in May-early June

Fruit Details:
Pod, brown, October, 2.5-4" long, 0.5" wide, containing 4-6 flat, brown, hard-coated seeds.

Fall Color:
Yellow to Golden Yellow

Bark Details:
On older branches and trunks very smooth, gray and beech-like in overall appearance and texture; called Yellowwood because the heartwood is yellowish

Disease / Insect Problems or Resistance:
Very few problems associated with this tree; Verticillium wilt has been reported, but nothing serious has been observed.

Native Habitat:
Species native to much of the South-east US. Generally occurs in rich, well-drained limestone soils in river valleys, slopes and ridges along streams.

Other Features:
Extremely hardy, tolerates cold very well and has been reported to flower in Minnesota, and Maine.

Culture and Care:
Transplant balled-and-bur lapped as a small tree into well-drained soil; tolerates high pH soils as well as acid situations, prune only in summer

This plant was blooming:
5/17/2010 - 5/21/2010

Plantings of this cultivar at Boone County Arboretum:
1033, 1104, 2900, 7870

    The information on this page may have come from one or more of the following sources:
  • Dirr, Michael. Manual of Woody Landscape Plants. Stipes Publishing. 1998.
  • Hightshoe, Gary L. Native Trees, Shrubs, and Vines for Urban and Rural America. John Wiley & Sons. 1988.
  • North Carolina Extension Plant Fact Sheets. www.ces.ncsu.edu
  • University of Connecticut Plant Database. www.hort.uconn.edu