Clay Soil

A vigorous, bushy perennial, 30-80 cm (12-32 in) in height, it has strongly lemon-scented, rough-textured, ovate, toothed leaves. Inconspicuous clusters...

An erect, straggly biennial, 60 cm-1.2 m (2-4 ft.) high, it has ridged, branched stems with trifoliate leaves and narrow...

Purple loosestrife is a perennial which grows on a creeping rhizome with erect stems reaching 60cm-1.5 m (2-5 ft.) in...

A perennial, mint-like herb, but with no aroma, it grows on a creeping root-stock to about 60cm (2ft) in height....

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 variable deciduous tree, growing to about 30m (99ft), it has pinnate leaves, with 7-9 ovate leaflets. Male catkins and...

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

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

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