Summer

A perennial, growing from a scaly bulb to 1-1.5 m (3-5 ft.) in height, it has stiff, erect stems with...

A tall, hardy, strong-smelling perennial, growing to 1.2 m (4 ft.), it has square, hollow stems, with deeply lobed, prominently...

A hardy biennial (or short-lived perennial if flower heads are cut before seeding), it grows on a taproot, from 50...

A hardy perennial, growing on a stout rhizome, 60-90 cm (2-3 ft.) tall, with narrow, sword-shaped leaves. Flowers are white,...

A hardy perennial, with tall, erect, softly hairy stems, to 2 m (6 ft.) in height, it has ovate, pointed...

Classed as a semi-evergreen, because it loses some foliage in winter, mainly if weather is severe. It is a bushy...

It is a hardy perennial, about 30-60 cm (1-2 ft.) in height, the stems are erect, woody at the base,...

An annual or biennial, growing to 60-90 cm (2-3 ft.), it has a rank, unpleasant smell and coarsely toothed, grey-green,...

A hardy, twining, herbaceous climber, it has clinging hairy stems and 3-7 lobed palmate leaves. Male and female flowers are...

An evergreen subshrub, 60 cm (2 ft.) in height, it has linear, silver-grey leaves and clusters of yellow button-shaped flowers...