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 Quercus macrocarpa

Common Name:
Bur Oak, Mossycup Oak

Growth Rate:
Slow over 20 year period

Average Mature Height:
70-80'

Average Mature Width:
70-80' or more

Flower Details:
Brown catkins

Fruit Details:
Nut, solitary, usually stalked, .75 -1.5" long, broadly ovoid, downy at apex, deep cap

Fall Color:
Dull yellow-green, yellow to yellow-brown

Bark Details:
Rough, deep ridged and furrowed character, dark gray to gray brown

Disease / Insect Problems or Resistance:
Anthracnose, bacterial leaf scorch, basal canker, canker, leaf blister, leaf spots, powdery mildew, rust, twig blights, wilt, wood decay, shoe-string root rot, galls, scales, gypsy moth, yellow necked caterpillar, oak skeletonizer, lace bug, oak mite

Native Habitat:
Nova Scotia to Pennsylvania, west to Manitoba and Texas. Introduced 1811

Other Features:
Weakly pyramidal form.

Culture and Care:
Difficult to transplant, prefers full sun in limestone soils. Very adaptable to various soils from sandy plains to moist alluvial bottoms, more tolerant of city conditions than most oaks. Zone 3-8

This plant was blooming:

Plantings of this cultivar at Boone County Arboretum:
8756, 8788

    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