Master Gardeners of Northern Virginia

40 Years of Growing Gardens and Gardeners

Snow covered branches
Photo © Mary Free

Quercus_phellos_acorns_detail-2_Oct_MMF

Quercus phellos (willow oak) acorns occur singly or in pairs. The nearly
stalkless acorn is ¼-½” inch long as wide with a shallow, scaly cupule
enclosing up to ⅓ of the nut, which turns brown with faint stripes when ripe.
Photo © Mary Free.

Quercus phellos (willow oak) acorns occur singly or in pairs. The oval, ¼-½” inch acorn is nearly stalkless with a shallow, scaly cup enclosing up to ⅓ of the nut, which turns brown with faint stripes when ripe.