Perennial

A graceful hardy perennial, growing to 1 m (3 ft.), with red-tinged, wiry stems, bronze-green, three-palmate leaves and irregularly star-shaped...

A rather undistinguished, hardy perennial plant, growing from 20-60 cm (8-24 in), with downy stems, three-lobed leaves and tiny, yellow,...

A hardy, clump-forming perennial, it grows to 75 cm (30 in) and has deeply divided palmate leaves. Large, round, purple-pink...

A hardy herbaceous perennial, it grows on a thick taproot, to a height of 1-2 m (3-6 ft.). Erect stems...

A spreading perennial, growing on a creeping rhizome, about 40 cm (16 in) tall, it has four-angled stems, whorls of...

A bushy, hardy perennial, up to 1.5 m (5 ft.) tall, with lax stems, pinnately divided leaves and racemes of...

A low-growing perennial, 25 cm (10 in) tall, which spreads by sending out rooting runners. It has shiny, trifoliate leaves,...

A graceful aromatic perennial, up to 2 m (6 ft.) tall, with erect, hollow stems and mid-green, feathery foliage the...

A herbaceous perennial, on a stout rootstock, 1-1.2 m (3-4 ft.) tall, with irregularly pinnate, inversely lance-shaped leaves and dense...

A herbaceous perennial, growing to 2.3 m (7 ft.), it has a thick, fleshy taproot, finely divided, feathery leaves and...