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any information on growing this or where I can get it please
try RHS Plantfinder Rosie. If it's available you'll find it there.
I find the tall ones too unstable for my garden.
Hi Rosie, I've got a Thalictrum given to me as a self sown seedling, not sure which one it is but it's around 1 metre tall and covered in little purple flowers at the minute. Avondale nursery sell it.
I haven't needed to support my one Happycottontail but planting with other plants for support would be fine.