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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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.

Eryngium bourgatii

The silver veined dark green foliage is very impressive when it reappears. The stiff steely blue flowerstems and flowers add to its magic in summer. Height 60 cm. Spread 40 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 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.