Erysimum

Erysimum - Wallflower-like perennials, biennials, and annuals, mostly of dwarf growth.

All of them are easy to grow, and delight in gritty soil and a well-drained and sunny position on the rock garden. Among the biennial and annual kinds, the best is E. Perofskianum, 1 to 1 1/2 feet high, with dense racemes of orange-yellow flowers. For early flowering it should be sown in autumn, and again in March and April for later bloom. E. arkansanum and pachycarpum are similar to E. Perofskianum.

Erysimum Pictures

Erysimum capitatum Greene sanddune wallflower

Erysimum capitatum

Erysimum capitatum

Erysimum capitatum (Dougl. ex Hook.) Greene sanddune wallflower

Erysimum capitatum

Erysimum repandum

Related Flowers

Alpine Wallflower

Alpine Wallflower (Erysimum Ochroleucum) - This handsome plant forms, under cultivation, neat rich green tufts, 6 to 12 inches high, and in spring is covered with sulphur flowers. The rock garden is most congenial to it; but it does very well on good level ground, though it is apt to get naked about the base, and may perish on heavy soils. Division and cuttings. Alps and Pyrenees. There are several varieties. Syn., Cheiranthus alpinus.

Fairy Wallflower

Fairy Wallflower (Erysimum Pumilum) - A very small plant, rare in cultivation, resembling the alpine Wallflower in the size and color of its flowers, but lacking its vigorous and rich green foliage. It is often only I inch high, and it bears very large flowers for its size. They appear above a few narrow sparsely toothed leaves, which barely rise from the ground. Alps and Pyrenees. It requires an exposed spot of very sandy or gritty loam in the rock garden, where it must be surrounded by a few small stones to guard it from drought, and it must be associated with alpine plants.

Erysimum Rhaeticum

Erysimum Rhaeticum - A pretty mountain flower which, though rare in cultivation, is a common alpine in Rhaetia and the neighboring districts, where in early summer its broad, densely-tufted masses are aglow with pretty, clear, yellow blossoms. E. canescens, a S. European species with scentless yellow flowers, is also a neat alpine, and so is E. rupestre, which is desirable for the rock garden.