perennial

A short-lived perennial, it is decumbent to erect, 20-60 cm (8 in-2 ft.) in height. The leaves are trifoliate and...

A perennial which grows on a stout taproot to 30 cm (1 ft.) long, it has a basal rosette of...

A bushy, hardy perennial, to 1 m (3 ft.), with bright-green, pungently aromatic, pinnately-lobed leaves and a mass of white...

A hardy perennial, up to 1 m (3 ft.) tall, it has a creeping rhizome and oval, silvery-green, soft-textured leaves,...

A mat-forming, hairy, hardy perennial, it has a basal rosette of wrinkled, ovate leaves with dentate margins. Flower stems rise...

A vigorous hardy perennial, growing to 1 m (3 ft.) in height. It has branched stems, lance late, finely toothed...

A mat-forming hardy succulent, it has blue-green, rounded leaves with pointed spiny tips, arranged in rosettes. Erect, hairy stems, to...

A clump-forming, hardy perennial, to 38 cm (15 in) tall, it is semi-evergreen (does not keep all its leaves in...

A small, bushy, hardy annual, to 38 cm (15 in) high, it has woody, much branched stems and small, leathery,...

A spreading, hardy perennial, on a creeping rhizomatous rootstock, 60-90 cm (2-3 ft.) tall, it has bright-green, fleshy, ovate to...