Bur Oak, Mossy-cup Oak
Nova Scotia to Pennsylvania, west to Manitoba and Texas
Somewhat pyramidal to oval in youth becoming broad-crowned with age. Can be irregular and shrubby. Slow growth rate.
Rich, deep, well-drained soils in full sun. Adaptable to many different soils.
Mossycup oak is a beautiful tree for a large landscape area. Taprooted and difficult to transplant, but drought- resistant.
Alternate, simple, 4 to 10 inches long, obovate, base wedge-shaped, leaf shaped like a fiddle. There are 2-3 rounded lobes on upper half of leaf and 5-7 additional lobes on lower half of leaf. Yellow-brown blotchy fall color.
Buds are .125 to .25 inches long.
Thick, rugged, ridged, dark gray.
Nut (acorn) .75 to 1.5 inches long. Involucre (cup) covers half to three-quarters of nut and is fringed. Acorn matures first year.