Cheiranthus arboreus. Shrubby W. F. Yellow. June.

Cheiranthus cheiri. Common W. F. Yellow, crimson, brown. June.

Cheiranthusfirmus. Permanent W. F. Yellow. July.

Cheiranthus linifolius. Flax-leaved W. F. Purple. July.

Cheiranthus scoparius. White, yellow, and purple. June.

Cheiranthus semperflorens. Everblooming W. F. White. July.

Besides these species and varieties, there are many German Wall-flowers imported, mostly semi-double, and well worthy of culture for their peculiar colours and habits.

Sowing is best done in June, the seedlings to be transplanted into nursery beds when three inches high. They will bloom in the spring, and the best may be then selected. Watering in very dry weather, lengthens the duration of their bloom. Saltpetre one ounce to the gallon, given once in ten days, heightens their colour and vigour.

Cuttings

The double varieties are thus propagated. When the old plants are done blooming, cut off their heads ; water them freely, and they will produce shoots along with their entire stem; these when from four to six inches long, must be cut off close to the stem, and be planted in a light rich shady border, under a hand-glass; watering occasionally until rooted.

Soil

A light rich loam, mixed with a little lime rubbish, suits it best. See Stock.