Perennial

An annual semi-parasitic herb, 5-30 cm (2-12 in) in height, it attaches itself to the roots and stems of grasses,...

A handsome hardy perennial which grows to at least 2.1 m (7 ft.) tall, with purplish stems, whorls of slender,...

A tall, hardy perennial, growing to 1.5 m (5 ft.), with lance late, rough-textured leaves surrounding the stems (per foliate),...

A woody-based, hardy perennial, up to 1.2 m (4 ft.) tall, leaves are opposite and mostly subdivided into 3-5 leaflets....

A relic from prehistory, closely related to the vegetation which decayed to form modern coal seams, it is a perennial,...

A large perennial, 2-2.4 m (6-8 ft.) tall, with a clump of long lance late leaves, growing from a fleshy...

A tall, hardy perennial, 1.2 m (4 ft.) high, with a rhizomatous rootstock and ovate-lance late leaves. The purplish-pink daisy-like...

A clump-forming, aromatic perennial, 40-90 cm (16-36 in) tall, with pinnate leaves, made up of lance-shaped leaflets, and tall racemes...

The leaves of all Dianthus are linear, lance-shaped and blue-grey or grey-green in color, with a waxy texture. The flowers...

A tall, bushy annual, 2 m (6 ft.) tall, it has strong-smelling, triangular, lobed leaves and large white, or violet-tinged,...