Cheiranthus
Mustard family
Cruciferae
Ky-ran'thus. Perhaps a dozen perennial herbs, scattered from Madeira to the Himalayas, one the widely cultivated Wallflower.
Description
Leaves narrow with few marginal teeth. Flowers with 4-clawed petals, yellow or orange-brown, fragrant.
How to Grow
Can be grown as biennials in mild-winter areas from direct seeding in early fall, but they need cold to trigger flowering. To grow as hardy annuals for spring bloom, start seeds indoors in midwinter. Shift seedlings to 4-in. (10-cm) pots, set in cold frame, and cover on very cold nights. After danger of hard frost, plant in well-drained soil. Prefers cool weather.
Cheiranthus Cheiri
Wallflower
. To 2 Ɖ ft. (75 cm) high, covered with minute, forked hairs. Flowers yellow, orange, red, purple, or red-brown, 1 in. (2.5 cm) wide, in terminal spikes or racemes. S. Europe. Biennial or tender perennial grown as a half-hardy annual.
