Chrysogonum virginianum
A creeping perennial with long reddish green stems of heart-shaped green leaves. Pretty star-shaped, five petaled, yellow flowers. Evergreen in mild winters.
Chrysosplenium davidianum
A mat-forming perennial with erect red-hairy stems. Leaves dark green with a scalloped edge, white-hairy beneath. Clusters of greenish yellow flowers.
Cichorium intybus
Clump-forming perennial with long basal leaves and clear blue flowerheads.
Cichorium intybus album
Clump-forming perennial with long basal leaves and pure white flowerheads.
Cichorium intybus roseum
Clump-forming perennial with long basal leaves and pink flowerheads.
Cimicifuga japonica
Clump-forming perennial with dark green, long-stalked leaves. Pure white flowers on slender stems like bottlebrushes.
Cimicifuga racemosa
Clump-forming perennial with dark green, long-stalked leaves. Pure white flowers on slender branched stems like bottlebrushes, unpleasantly scented.
Cimicifuga simplex
Clump-forming perennial with light green, long-stalked leaves. Pure white flowers on slender arching stems like bottlebrushes.
Cimicifuga simplex ‘White Pearl’
Clump-forming perennial with pale green, long-stalked, leaves. Arching stems of green buds opening to white flowers, like narrow bottlebrushes.
Cimicifuga simplex Atropurpurea Group
Clump-forming perennial with large, fern-like, purple-tinted leaves. Arching stems of ivory white bottlebrush-like flowers.
Cirsium rivulare ‘Atropurpureum’
Clump-forming perennial with prickly, dark green leaves, softly hairy beneath, and rich crimson thistle-like flowers.
Claytonia sibirica
Semi-evergreen with fleshy, bright green foliage and racemes of white or pink flowers.