Plant Library

A short, spreading speedwell with striking upright flower spikes in deep blue tones. The foliage forms a low mat and the stiffly erect flower stems rise well above the leaves, creating a distinctive display. Plants bloom over an extended period from late spring through much of summer.

Extremely hardy and easy to grow in sun with average soil that drains freely. The low spreading habit makes it effective along path edges or at the front of borders. Requires minimal care and maintains its flowering performance year after year without intervention. Combines well with other low perennials and spring bulbs for extended seasonal interest.

A clump-forming speedwell with glossy green leaves forming a low mound. Deep blue flower spikes appear in dense clusters in late spring and early summer, smothering the plant with colour. The foliage remains tidy and compact after flowering if spent stems are clipped back to the basal growth.

Plants thrive in sun with average, well-drained soil. After the main flowering period, stems should be cut back to the foliage mound to maintain a neat appearance and encourage fresh growth. Suitable for border edges, rock gardens, and along paths where the intense blue flowers and compact habit can be appreciated. Combines well with white-flowered violas and low spring bulbs.

Tall stems clothed with neatly arranged whorls of narrow, serrated leaves and crowned with slender spikes of pure white flowers in midsummer. The flower spikes open from the top downward and create clean vertical accents. Plants develop slowly and may take three to four seasons to reach full maturity and flowering vigor.

Requires moisture-retentive soil with good drainage and performs well in sun with adequate water through summer. Emerges late in spring so crowns should be marked to avoid disturbance during early border maintenance. A Chelsea chop in late May reduces final height by approximately twenty percent if a more compact form is preferred. Suitable for borders and naturalistic plantings where strong vertical form is desired.

A robust selection with deep pink to rose-coloured flower spikes held on sturdy stems. The whorled foliage is arranged in tiers along the upright stems, creating attractive texture from the moment growth emerges in late spring. Plants require several seasons to establish fully and reach flowering maturity.

Thrives in soils that hold moisture during the growing season while offering good drainage. The tall stems hold their form well in favourable conditions though a Chelsea chop in late May can create a more compact plant with increased stem strength. Suitable for borders, naturalistic schemes, and meadow plantings where late summer colour and vertical structure are valued. Combines effectively with grasses and late-flowering perennials.

A cultivar producing flower spikes in shades of lavender-pink above tiers of whorled leaves. The foliage emerges late in spring and forms neat arrangements along the stems. Plants build slowly to maturity over three to four seasons before reaching their full flowering potential.

Requires soil that retains moisture through summer while draining freely. May require support in regions with heavy rainfall and lush growing conditions. A Chelsea chop treatment in late May will reduce the ultimate height and promote sturdier stems less prone to lodging. Best suited to sites with good air circulation and soils that do not become waterlogged. Combines well with taller asters and grasses in late summer borders.

A selected form with flower spikes in soft rose-pink tones held above whorled foliage. The narrow, serrated leaflets are arranged in neat whorls along upright stems. Plants develop slowly over several growing seasons before producing their full display of slender terminal racemes surrounded by additional whorls of flowering spires.

Performs best in moisture-retentive soils that drain well. Can reach considerable height in favourable conditions but may benefit from a Chelsea chop in late May to reduce final stature by approximately twenty percent and create sturdier growth. Emerges late in spring so care should be taken not to damage crowns during early season border work. Valued for naturalistic plantings and borders where vertical form and late summer interest are desired.