Clematis 'Avalanche' - Clematis
Clematis × cartmanii 'Avalanche' is a truly outstanding evergreen clematis that puts on a breathtaking show of pure white flowers in early spring. Unlike most clematis, this exceptional variety retains its deeply divided, fern-like foliage year-round, providing structure and interest through every season. When in bloom, the stems are smothered in masses of small, star-shaped white flowers, creating a cascading cloud of blossom that is quite unlike any other clematis.
Seasonal Highlights
Late winter to early spring is when 'Avalanche' truly comes into its own, producing an extraordinary abundance of glistening white flowers that smother the plant from top to bottom. Each bloom is delicate and star-shaped, held against the intricate, deeply cut evergreen foliage that resembles fine lacework. Outside of the flowering season, the rich, dark green ferny leaves continue to earn their place, providing year-round texture and interest on walls, fences and structures.
Key Features
- Masses of pure white star-shaped flowers in late winter and early spring
- Attractive evergreen foliage with deeply divided, fern-like leaves
- Vigorous and free-flowering habit
- Excellent year-round structure and foliage interest
- Fully hardy and reliable in sheltered positions
Perfect For
Ideal for training across walls, fences, pergolas and trellis where its evergreen foliage can be appreciated all year. Perfect for covering unsightly structures quickly and effectively. Works beautifully in sheltered courtyards and walled gardens where it is protected from the harshest winds. An excellent choice for gardeners seeking early-season colour when little else is in flower.
Growing Conditions
Best positioned in a sheltered spot with protection from cold, drying winds, as the evergreen foliage can be damaged by severe frost and wind scorch. Thrives in full sun to partial shade. Plant in fertile, moist but well-drained soil enriched with organic matter. As with all clematis, keep the roots cool and shaded by mulching generously or planting low-growing plants at the base.
Care
Pruning requirements are minimal — this is a Group 1 clematis that flowers on the previous year's growth, so hard pruning should be avoided. After flowering, lightly trim back any wayward or overcrowded stems to maintain a tidy shape and encourage healthy new growth. Remove any frost-damaged foliage as needed. Feed with a balanced fertiliser in spring to support vigorous growth, and water well during dry spells, particularly in the first season after planting.
Looks Great With
Stunning when grown alongside early spring bulbs such as daffodils or blue Muscari for a classic seasonal combination. Pairs beautifully with dark-leaved evergreen shrubs that throw the white blossom into sharp relief. Combines well with winter-flowering Clematis cirrhosa varieties or early hellebores beneath. A wonderful companion to climbing roses, extending the season of interest on the same structure well beyond the rose's own flowering period.
A spectacular and versatile evergreen clematis, 'Avalanche' brings a dazzling early-season display of white blossom combined with beautiful year-round foliage — a truly rewarding plant for any sheltered garden setting.
