Aster alpinus.*—Height, 9 inches; first week of June; flowers, large, bright purple, borne on long stems from the base of the plant; the earliest flowering of all the asters.
Aster Amellus var. Bessarabicus.—Height, 1 to 1-1/2 feet; July to September; flowers, large, deep purple, singly on long stems; very fine. †
Aster Novæ-Anglæ var. roseus.*—Height, 5 to 7 feet; fourth week of August; flowers, bright pink, borne profusely in large terminal clusters; very showy.
Boltonia asteroides*—Height, 4 to 5 feet; September; flowers, smaller than the next, pale pink, borne very profusely in large panicles; much later than the next species.
Boltonia latisquama*—Height, 4 feet; first week of August; flowers, large, white, somewhat resembling asters, and borne very profusely in large panicles.
Campanula Carpatica.—Height, 6 to 9 inches; first week of July; flowers, medium size, deep blue, borne profusely in loose panicles; continues in bloom throughout the summer. A white variety of this is also good.
Campanula Grossekii.—Height, 3 feet; first week of July; flowers, large, deep blue, borne on a long spike.
Campanula persicifolia.—Height, 3 feet; flowers, large, blue, borne in a raceme with long flower stems. There are also white and double varieties which are good.
Clematis recta.—Height, 4 feet; fourth week of June; flowers, small, pure white, borne profusely in dense clusters. This is a very compact bushy species and desirable for the rear of the border. Clematis Jackmani with large deep purple flowers and Clematis Vitalba with small white flowers, are excellent climbing sorts.
Convallaria majalis* (Lily-of-the-valley).—Height, 6 to 9 inches; latter part of May.