An upright, clump-forming perennial, suitable for bog gardens. Flowers appear in clusters, in late summer. Dies back in winter.

A semi-evergreen, trailing perennial, suitable for rock gardens. Leaves form in rosettes. The solitary flowers appear in early fall.

An annual or biennial. Glossy leaves form in tufts. Flowers appear from late summer to fall. Suitable for wild gardens and borders.

A herbaceous, spreading perennial. Leaves form on rosettes. Flowers are stalkless and appear in late summer.

A clump-forming perennial that dies back in winter. Flowers appear late summer to early fall. This species requires shade, and does well with ferns and grasses.

A herbaceous perennial, suitable for rock gardens. Leaves form in basal rosettes, flowers bloom in late summer.

An upright perennial that dies back in winter. Flowers bloom in summer, and are sometimes blue with white-marked lobes.

An evergreen perennial, suitable for rock gardens. Solitary flowers bloom in early summer.

A clump-forming perennial, suitable for rock gardens. The 2 inch long flowers appear in early summer.

A semi-evergreen perennial, suitable for rock gardens. Leaves form in rosettes. Solitary flowers appear on prostrate stems in fall.