Phlox decussata* (the garden perennial hybrids).—Height, 1 to 3 feet; third week of July; flowers, of many beautiful shades and colors, are found in the large number of named varieties of this phlox, which continues to bloom until late in the autumn. †
Phlox reptans.*—Height, 4 inches; fourth week of May; flowers, medium size, purple, and borne in small clusters.
Phlox subulata* (setacea).—Height, 6 inches; third week of May; flowers, medium size, deep pink, and borne in small clusters.
Platycodon grandiflorum.—Height, 1-1/2 to 2 feet; second week of July; flowers, very large, deep blue, borne singly or in twos.†
Platycodon grandiflorum var. album.—A white-flowered variety of the above and makes a fine contrast to it when they are grown together. It blooms a few days earlier than the species.
Platycodon Mariesii.—Height, 1 foot; second week of July; flowers, large and deep blue.
Polemonium cœruleum.*—Height, 2 feet; second week of June; flowers, deep blue, borne in terminal spikes.
Polemonium reptans.*—Height, 6 inches; third week of May; flowers, medium in size, blue, and borne profusely in loose clusters.
Polemonium Richardsoni.*—Height, 6 inches; third week of May; flowers, medium in size, blue, borne profusely in pendulous panicles.
Potentilla hybrida var. versicolor.—Height, 1 foot; fourth week of June; flowers, large, deep orange and yellow, semi-double.