Herbaceous plants (in botanical use frequently simply herbs) are plants that have no persistent woody stem above ground. The term is mainly applied to perennials, but in botany it may also refer to annuals or biennials, and include both forbs and graminoids.

Annual herbaceous plants die completely at the end of the growing season or when they have flowered and fruited, and they then grow again from seed.

Herbaceous perennial and biennial plants may have stems that die at the end of the growing season, but parts of the plant survive under or close to the ground from season to season.

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Calla Odessa ®

Tall upright purple-almost black flowers from July to September. Leaves are flecked with white. Dwarf variety suitable for planters and patio. Height 40 cm. Protect from frost.

Centaurea Black Sprite

Low mound of grey-green foliage. Shaggy and exotic looking silky, dark purple almost black flowers in early and mid Summer. Full sun or part shade. Good cutflower. Height 35 cm. Spread 50 cm.

Iris chrys Black Form

A clump-forming beardless Iris which is ideal for a damp spot, producing dramatic near-black flowers over strap-like grey- green leaves. Flowers May- June. Height 50cm.

Iris germanica Superstition

An extremely hardy and low maintenance perennial. Strap like green leaves. Very dark purple flowers appear black creating stunning contrast in the Summer garden. A RHS Award of Garden Merit plant. Full sun. Height 90cm. Spread 30cm.

Aquilegia Black Barlow

Decorative foliage is graceful and airy. The double purple-black flowers are unusual to say the least and appear in Summer. Height 70 cm. Spread 30 cm.