Hare’s ear mustard is native to Europe and Asia. It is naturalized and widespread in North America, and
is considered an invasive species in some areas, including central Canada.
It is found in fields, roadsides, railroad beds, and waste areas.
Plants: Plants are erect annuals, growing 12-28" (30-70 cm).
Leaves: Leaves are thick, waxy-looking and pale green, ovate (an oval,
wider at the stem end). The leaves clasp the stem. Basal leaves are oblanceolate to obovate, 1¾-3½" (5-9 cm). Upper leaves are oblong to elliptic or lanceolate.
Flowers: Flowers are in racemes of 10-25. Each flower
is ⅜" (1 cm) around, whitish or pinkish, on a stalk (pedicel) up to ⅜" (1 cm) long.
are tiny and white, with approximately 4 petals. About 7 greenish yellow-tipped stamens emerge like an asterisk from the flower center.
Flowers appear from May to July.
Fruits: Beanlike siliquae are 3-6" (8-14 cm)
long, usually four-angled.