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 Platanus occidentalis

Common Name:
Sycamore, American Planetree

Growth Rate:
Medium-fast: 1.5-2' per year.

Average Mature Height:
75-100'

Average Mature Width:
75-100'

Flower Details:
Yellow green 1" ball-like clusters: late May-early June

Fruit Details:
A spherical collection of seeds borne on a 3-6" stalk. Each seed is tiny, winged, and 0.5" long; maturing in November, disseminating in late winter.

Fall Color:
Tan to brown: unrewarding

Bark Details:
Gray-brown: mottled patchy exfoliating on upper trunk showing white to creamy inner layers.

Disease / Insect Problems or Resistance:
Anthracnose is severe; leaf spot; does not usually kill tree.

Native Habitat:
Maine to Minnesota, south to Florida and Texas. Introduced 1640.

Other Features:
In native situation along water is impressive in landscape.

Culture and Care:
Native in bottomlands, along river and stream banks: grows best in deep, moist, rich soils with good ground water in full sun. Transplants easily. Moderately drought and salt tolerant

This plant was blooming:

Plantings of this cultivar at Boone County Arboretum:
2547, 2670, 2854, 8765, 8766, 8767, 8768, 8769

    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