Perennial

A tough, spreading perennial, the erect stems grow to 1.5 m (5 ft.) tall, on creeping roots. The stems and...

A small perennial, on a creeping rhizome, 15-20 cm (6-8 in) in height. The bright-yellow, dandelion-like flowers, borne singly, appear...

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

A hardy perennial, 30-60 cm (1-2 ft.) tall, it has ovate to heart-shaped, pale-green, and soft-textured leaves and inconspicuous greenish-yellow...

A shrubby, evergreen perennial, 10-30 cm (4-12 in) in height, it has creeping roots and dark-green, glossy foliage, shaped like...

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,...

An evergreen tree, 20 m (65 ft.) in height, it has soft, grey bark and dark-green, ovate leaves, with a...

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