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49.Bur Oak

Quercus macrocarpa


Tree Details

Hardiness zone:
2 – 8
Height:
70 – 80 with a maximum of 100
Spread:
equal or greater than height
Habit:
In youth: weakly pyramidal to oval; At maturity: massive trunk and broad crown with stout branches
Light:
Best in full sun
Soil:
Very adaptable to various soils
Flowers:
inconspicuous, hanging catkins
Fruit:
acorn 3/4 – 1 1/2 long
Landscape use:
Too large for home landscapes; excellent for parks or large areas
History:
Native range is Nova Scotia to Pennsylvania, west to Manitoba and Texas; introduced in 1811
Pests\Problems:
Pests: none; Problems: various types of galls; roots may crack driveway or patio surfaces if planted too close; powdery mildew; canker; anthracnose
Significant Features:
Fringed acorn cup, exceptional size; some display corky ridges on small branches

 

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Arboretum Consultant

Michael A. Dirr

Dr. Michael A. Dirr is a horticulturist associated with the University of Georgia. Dr. Dirr has published over 300 scientific and popular publications and has authored seven books, including A Manual of Woody Landscape Plants: Their Identification, Ornamental Characteristics, Culture and Propagation and Uses. It has sold more than 250,000 copies.

Arboretum Consultant

Richard C. Webel

Richard C. Webel is managing director of Innocenti & Webel LLC, a renowned firm that specializes in architecture, landscape architecture and strategic planning. He collaborated on A Landscape of Continuity: The Practice of Innocenti & Webel, published by Harvard University in 1997. In addition to presenting lectures throughout the United States, he has also appeared on CNBC and CNN.