Squirrels, Birds, Butterflies, Butterfly Larvae, Other Showy Insects
A good urban tree since it is resistant to air pollution and car exhaust.
POISONOUS PARTS: Acorns (seeds of nuts) and young leaves. Low toxicity if eaten. Symptoms include stomach pain, constipation and later bloody diarrhea, excessive thirst and urination. (Poisonous Plants of N.C.)
An individual tree does not produce nuts until it reaches at least 30 years of age. Individual trees can live several centuries(400 years or more).
Not only are acorns large, but they have a distinctive appearance because of the conspicuous fringe along the rim of their cups. (Illinois Wildflowers)
Bur Oaks keep a respectful distance from each other; they hold each other off, not so much by their wide-spreading branches as by the fierce competition of their root systems. (Peattie)
Traditional Medical Uses: Native peoples made a bark decoction with astringent properties to treat diarrhea, wounds, sores, hemorrhoids, poison oak and insect bites.
Other Uses: Cabinetry, flooring, building and fence posts.
Wildlife Use: The acorns are eaten by many birds and mammals including squirrels, rabbits, mice, deer, wood ducks and blue jays, which frequently cache the acorns for later use. The foliage is eaten by deer and cattle. Red-tailed hawks, screech owls, fox squirrels and flying squirrels nest in large trees of Bur Oak. (USDA PLANTS)
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