ASTRAGALUS

(a name applied to a shrub by Greek writers). Milk Vetch. O RD. Leguminosæ. A very large genus of hardy herbs or sub-shrubs. Flowers in axillary clusters; standard larger than the wings. Leaves unequally pinnate. About one hundred species have from time to time been introduced in English gardens; many of these are lost to cultivation; the comparative few here described are still generally grown, and are good representative species. They are all of easy culture. The shrubby kinds grow well in any light dry soil, and are slowly increased by cuttings placed in a cold frame, or by seeds. The herbaceous perennials prefer a dry light soil, and may be increased by divisions or seeds; the latter mode is preferable, as many species are very liable to die if transplanted or divided, which is at best but a slow method. Seed should be sown in pots of sandy soil placed in a cold frame as soon as ripe, or very early in the spring, as they may lie a long time before germinating. The dwarfer species constitute admirable rockwork plants, and can be grown in pots containing a mixture of loam, peat, and sand. Seeds of the two annual species, A. Cicer and A. Glaux, merely require to be sown in the open border early in spring.