Also known as 'Madam le Coultre' (Marie's married name), Clematis 'Marie Boisselot' is a large white flowered hybrid with a golden eye. It does well in any aspect and can be pruned or not as the mood takes, unpruned it will have larger flowers earlier from May/June and September, but if pruned it will have many more but smaller flowers a little later, June to September.
Raised by Auguste Boisselot of France in 1885 It has an A.G.M.