. The Book of gardening; a handbook of horticulture. Gardening; Horticulture. 266 THE BOOK OF GARDENING. and, as the flowers are produced in great profusion in the late autumn, when few hardy plants are in flower, they are very much prized for cutting. The species and varieties are very numerous, and are propagated by either seeds, cuttings, or division. In dividing the plants (which is best done in the spring, although autumn may be selected), only the outside portions should be utilised. The old stools are best thrown away. Aster acris is an attractive plant, of neat, bushy habit, reaching a
. The Book of gardening; a handbook of horticulture. Gardening; Horticulture. 266 THE BOOK OF GARDENING. and, as the flowers are produced in great profusion in the late autumn, when few hardy plants are in flower, they are very much prized for cutting. The species and varieties are very numerous, and are propagated by either seeds, cuttings, or division. In dividing the plants (which is best done in the spring, although autumn may be selected), only the outside portions should be utilised. The old stools are best thrown away. Aster acris is an attractive plant, of neat, bushy habit, reaching a height of 2ft., and bearing an abundance of bright blue flowers ⢠during August and Sep- tember. A. Amellus grows 2ft. high, and bears numerous violet- purple flowers in August and September. Its variety bessarabicus (Fig. 149) is one of the best in the whole genus. It has purplish flowers, much larger than those of the type. A. diffmus horizontalis is of curious habit, growing 2ft. high. It is an exceedingly effective border plant, its numerous branching stems being literally smothered with small white flowers edged with red. It flowers during September and October. A. ericoides has long graceful sprays of small white flowers. A. grandiflorus :(ift. to 2^ft. high) bears an abundance of large violet or blue flowers during September and October. A. Nova-Anglim bears purple flowers with orange centres, in terminal clusters, on stems varying from 3ft. to â 5ft. high. Two or three varieties are also grown. A. Novce-Belgii grows 3ft. or 4ft. high, and produces its pale blue flowers in the late autumn. Numerous garden varieties are in cultivation, differing from the type chiefly in the colour of their flowers. A. undulatus grows 3ft. high, and produces an abundance of soft lilac-coloured flowers. A. viminms (3ft.), small white, star-shaped flowers, or graceful sprays. See also "; Bocconia cordata (Plume Poppy) is a handsome foliage plant, having large roundish
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