Interesting Plant: Clematis x cartmanii ‘Avalanche’ (White Evergreen Clematis)
I came across this while browsing /r/gardening on Reddit and love the look immediately. I don’t see many clematis here in the San Fernando Valley of Los Angeles. I am guessing it is probably too hot and dry for most varieties but I would like to have this one cascading over my back wall.
From San Marcos Growers…
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 will also incorporate comments received from others and always appreciate getting feedback of any kind from those who have some additional information about this plant, in particular if this information is contrary to what we have written or if they have additional cultural tips that would aid others in growing Clematis ‘Avalanche’.
A profusion of pure white flowers with bright gold stamens blankets the lustrous, deep green, trifoliate foliage in spring. Stunning when used to trail down embankments – like an avalanche of snow when in bloom! Train to climb a trellis, post or fence, or allow to meander unsupported through shrub borders. Evergreen.
What are your thoughts on this Interesting Plant? Drop a note in the comments!
More information on Clematis x cartmanii ‘Avalanche’ (White Evergreen Clematis):
- Clematis x cartmanii ‘Avalanche’ (White Evergreen Clematis) at San Marcos Growers
- Clematis x cartmanii ‘Avalanche’ (White Evergreen Clematis) at Monrovia
- Clematis x cartmanii ‘Avalanche’ (White Evergreen Clematis) at RHS.org
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Interesting Plant is a series from A Gardener’s Notebook blog and podcast that highlights the most interesting plants I find in my Internet and real-world travels — Douglas