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Products > Clematis x cartmanii Avalanche ['Blaaval']   Clematis x cartmanii Avalanche ['Blaaval'] - White Evergreen Clematis       Habit and Cultural Information Category: Vine Family: Ranunculaceae (Buttercups) Origin: Garden Origin Evergreen: Yes Flower Color: White Bloomtime: Spring Synonyms: [Clematis x cartmanii 'Blaaval'] Parentage: (C.paniculata x C.marmoraria) Height: Climbing (Vine) Exposure: Sun or Shade Irrigation (H2O Info): Medium Water Needs Winter Hardiness: 10-15° F May be Poisonous  (More Info): Yes Clematis x cartmanii 'Avalanche' (White Evergreen Clematis) - An evergreen Clematis with pure white single flowers with prominent yellow stamens in the center. The unique deeply-cut, leathery, green leaves, which are a very attractive feature when the plant is in full bloom, are nearly hidden by the profusion of flowers in early to mid spring. Flowers are borne on previous season's stems. Plant on a fence or trellis where stems can grow 12-15 feet with support ,or use as a groundcover. If used to trail over and down a slope, it can look like an avalanche of white flowers. Plant in full sun to light shade and water regularly spring through summer. Hardy to 10 to 15° F. A plant patent is applied for this plant. This is a selected seedling from a cross made at Blackthorn Nursery, England by renowned plantsman Robin White. The pollen parent was Clematis paniculata and the seed parent was Clematis marmoraria - both evergreen species from New Zealand. The name C. × cartmanii honors the respected botanist Joe Cartman who first produced this cross from C. paniculata and C. marmoraria. The original registered name for this plant is Clematis x cartmanii 'Blaaval'.  This description is based on our research and observations made of this plant as it grows in our nursery, in the nursery garden and in other gardens that we have visited. We also try to incorporate comments received from others and appreciate getting feedback of any kind from those who have additional information about this plant, particularly if they disagree with what we have written or if they have additional cultural tips that would aid others in growing Clematis 'Avalanche'.     [MORE INFO]