Thanks Plant Pauper for that link. However they're usually very small plants from Parkers and I reckon for clematis especially, it's worth paying a bit more and getting bigger plants.
Winter cold will not kill clematis alpina or macropetala, but the winter wet will. They will not over winter here on the mild, wet, marshland of West Lancashire, but many clematis friends in Canada grow them successfully.
These are some of my clematis. From the top: viticella John Howells any aspect July to Sept to 10 feet. Herbaceous and non clinging Carol Klein any aspect July to October 4-5 feet Texensis Princess Diana sunny aspect July to October Acropolis for growing in a tub to 4 feet high Rebecca a new variety May to September 6-8 feet any aspect a red clematis very outstanding colour. tangutica Bill Mackenzie July to October sunny aspect 10-15 feet.
My Belgian clematis specialist reckons the alpinas I bought from him are hardy down to -30C so I expect it was more the wet - except for 2009 which went down to -32C in my garden on January 6th. A memorable date for the ensuing devastation to clems, roses, evergreens.............
Vendée - 20kms from Atlantic coast.
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
Winter cold will not kill clematis alpina or macropetala, but the winter wet will. They will not over winter here on the mild, wet, marshland of West Lancashire, but many clematis friends in Canada grow them successfully.
viticella John Howells any aspect July to Sept to 10 feet.
Herbaceous and non clinging Carol Klein any aspect July to October 4-5 feet
Texensis Princess Diana sunny aspect July to October
Acropolis for growing in a tub to 4 feet high
Rebecca a new variety May to September 6-8 feet any aspect a red clematis very outstanding colour.
tangutica Bill Mackenzie July to October sunny aspect 10-15 feet.
Obviously I love the Carol Klein.