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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Geranium pratense Midnight Reiter

The true blue flowers combine well with its dark purple foliage in summer. Good for cottage style garden, container or border. Disease resistant plant. Height 30 cm. Spread 25 cm.

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.

Nepeta Walkers Low

Aromatic grey-green foliage. Dark lavender-blue flowers come in flushes from early Summer. Will continue to Autumn once deadheaded. Height 60cm. Spread 80cm. Drought tolerant.

Polemonium cae Bambino Blue

Height 40 cm. Hardy herbaceous perennial. Blue flowers June-July. Sunny position, any free-draining soil.

Salvia nemerosa Caradonna

Violet-blue flower spikes from June to October. Grey-green scented foliage. A magnet for bees and butterflies. Height 30cm. Spread 45cm.

Stokesia Mels Blue

Masses of stunning lilac blue flowers nestled in bright green foliage from late Summer through to Autumn. Attracts bees & butterflies. Plant in full sun or part shade. Height 40 cm. Spread 30 cm.