: Quercus macrocarpa
: Burr Oak, Mossycup Oak, Mossycup White Oak
: Eastern North America, Interior North America
Hardy to zone
: valuable wood, medicinal
: prairies, barren or disturbed ground, inner forests
: round, irregular
: 200-400 years
: gypsy moth, rough bulletgall wasp
: shot hole disease
: full sun
: tolerates heavy clay, drought tolerant, ph adaptable
In the White Oak section and Native to central - eastern United States and Canada. The Bur Oak Possesses the widest growth range of all the native Oaks. Its heavy, hard and strong wood make it useful for cabinetry, flooring and fence posts. The bark and roots have medicinal uses including treatment for the heart, diarrhoea and as an astringent. It is common in the landscape but the large tap root on Bur Oaks can make it slightly challenging to cultivate.
Shinny, dark-green leaves with an unimpressive yellow green or brown fall colour. Lobes are deeply cut. A wide, broad lobe is present at the leaf tip.
Twigs & Buds
Young twigs have protruding, rough ridges. Winter twigs resemble those of other Oaks.
Acorns are the largest among the native Oaks and have burs present on caps. They are edible after tannins are leached or boiled out. Seeds germinate easily.
Pests & Disease
Usually no serious pests, however there are a few:
- Gypsy Moth (a problem for all Oaks)
- Rough Bulletgall Wasp (creates round calls on branches).
- Shot Hole Fungus (creates holes in leaves but does minimal tree health damage)