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.

Showing 1–24 of 25 results

Agastache ‘Blue Fortune’

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

Agastache ā€˜Blue Boaā€™

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

Aster ‘Lady in Blue’

Aster are beautiful daisy-like flowers which can be found in an array of different colours. Aster 'Lady in Blue' is perfect for adding colour to your garden at the end of the season when areas need brightening up!

Campanula Ringsabell Indigo Blue

A tidy mound of slender stems with large drooping purple-blue bells in early to mid Summer. Very floriferous. Prefers a sun or partial shade position. Height 15cm. Spread 30cm.

Echinops bann. Blue Globe

Often grown as an architectural plant for its shapely leaves, the dark blue flowerheads in summer will attract many butterflies and bees to your border, Height 100 cm. Spread 45 cm.

Eryngium Big Blue

Unusual spikey blue-green foliage. Spectacular electric blue flowers. Height 60cm.

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.

Eryngium planum Blue Hobbit

A very good choice to add colour to the front of a border or container. Plant is a silvery blue all over and the flowerhead is made up of 100s of small flowers. Height 30 cm. Spread 25 cm

Geranium Azure Rush

Large light blue flowers with a white eye from May to October. A very good ground cover. Height 40cm.

Geranium himalayense Gravetye

An excellent groundcover plant. The large violet blue flowers have a white centre and a touch of red. Attractive foliage with good autumn colour. Height 30 cm. Spread 60 cm.

Geranium Johnsons Blue

Ideal plant for cottage garden! The plant will be smothered by large blue flowers with darker veins. These pale to pearly grey when maturing. Height 40 cm. Spread 60 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.

Lobelia ‘Starship Blue’

A really showy perennial! Bright green ovate leaves form a strong and neat, upright clump of foliage. In late Summer, a wonderful display of deep purple-blue flower spikes are a truly eye-catching addition to any garden or patio. Will attract pollinators. Garden plant for flowerbed in well drained soil in full sun or partial shade. Good in beds, borders, cottage style gardens, also in pots or containers. Height 60 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

Nepeta subsessilis

Large blue flowers from June-August. Sunny position, free-draining soil. Height 60 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.

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.

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.

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.

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.