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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Agastache ‘Blue Boa’

Agastache are herbaceous perennials which are commonly known as Giant Hyssop. They are perfect for adding colour and vertical dimension to any landscape.

Brunnera ‘Jack of Diamonds’ ®

A wonderful perennial that will bring sparkle and interest to shady areas. Forms a spreading clump of silver heart-shaped leaves, frosty in appearance. The large leaves carry striking dark green veining. Clusters of small, dainty looking, baby blue 'forget-me-not' flowers in Spring. Attracts pollinators. Garden plant for the flowerbed in moist but well drained soil in full or partial shade. Good in beds, borders, for under-planting, woodland style gardens. Also suitable in large pots or containers. Height & Spread; 40cm x 80cm.

Brunnera mac. Hadspen Cream

The irregular creamy white margins will brighten things up in borders or near ponds. The vivid blue forget-me-not flowers from early spring to summer. Height 40 cm. Spread 30 cm.

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.

Nepeta x. faassenii

Bushy, clump-forming. Useful for edging. Loose spikes of soft lavender-blue flowers in July-Aug. Height 45 cm. Position in full sunlight and in well drained 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.

Salvia nemerosa Ostfriesland

Height 50cm. Neat, clump-forming. Violet-blue flowers in Summer in branching racemes.

Salvia x sylv Mainacht

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

Tradescantia and Leonora

Spiderwort Unusual triangular blue flowers June-July, which are short-lived, but are produced in a long succession. Height 60 cm.

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.