Perennial

A shrubby semi-evergreen (it loses foliage in winter in cold climates and as the plants age), it grows to 1...

An alpine perennial with a creeping rootstock, it has a basal rosette of small, ovate, downy leaves and flowering stems...

A tall palm, reaching 20 m (65 ft.) in height, with numerous feathery leaflets making up its 2 m (6...

An aromatic biennial with a bulbous, fleshy root. Grooved stems grow from 30-90 cm (1-3 ft.) high in the second...

A hardy perennial with soft, downy leaves and pale pink flowers in summer, it reaches 1—1.2 m (3-4 ft.) in...

A tropical evergreen with tall clumps of ovate to lance late leaves growing from ginger-scented rhizomes to a height of...

A perennial 40-50 cm (16-20 in), it has hairy, branched stems and deeply lobed leaves (seven or nine lobes) with...

A hardy perennial, 10-30 cm (4-12 in) high, growing on a creeping rootstock, it has attractive blue flower spikes in...

A perennial with compound pointed leaves, covered in soft hairs. In summer and autumn it has small yellow flower spikes...

A tender succulent whose rosettes of spiky grey-green leaves are 1-2 m high (3-6 ft.) with a spread of 2-3...