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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Camassia coerulea Dark Blue

Camassia is one of the best spring flowers. Lovely spikes of dark blue flowers in early spring. Height 60 cm. Good cutflower.

Geranium Rozanne

The violet-blue flowers have white centres and appear from late spring to November. Rewarding plant, rich flowering and a strong grower. Height 45 cm. Spread 50 cm.

Iris germanica Gentius

Has a beautiful blue/ purple large flower head. Flowering from early May through to June. Height 80cm.

Libertia caerulescens

The evergreen and stiff leaves will add interest to your border. The pale china blue flowers appear from early to late summer. Likes a sunny position. Height 40 cm. Spread 30 cm

Lupinus Gallery Blue

A hardy and tough garden plant. A very good and rewarding addition to any garden. Blue flowerspikes all through the summer. Height 60 cm. Spread 40 cm

Nemesia Karoo Dark Blue

Masses of intense violet blue flowers with a tiny yellow eye from May to October. Fantastic garden plant - ideal in baskets/pots/borders or used as fringe planting. Full sun or part shade. Height 25cm. Spread 30cm.

Polemonium Stairway to Heaven

Variegated green and cream leaves, flushed with pink in Spring. Violet-blue flowers in Spring and early Summer. Height 35cm.

Salvia x sylv Mainacht

Very dark blue - nearly black flower spikes from May-August. Height 40 cm. Sunny position, free-draining soil.

Scabiosa Blue Butterfly

The lavender-blue flowers are 5cm across and resemble a pincushion. They will be on show from June till when the first frosts occur. Attracts butterflies. Height 40cm. Spread 30 cm.

Anchusa azurea ‘Dropmore’

'Italian Bugloss' is a biennial or short-lived perennial however, do not let this put you off. It is still a magnificent plant with stunning flowers and structural integrity.

Aquilegia vulgaris ‘Winky Blue-White Double’

Aquilegia is a genus of clump-forming, short-lived perennials, which are commonly known as columbines. The different varieties offer an array of colour that can be used in your garden or patio.