A fast-growing evergreen Clematis, 'Snowdrift' is breathtaking. Expect it to reach 10 to 25 feet high when mature, and to spread about 5 to 8 feet wide.
A superb choice for threading through an open fence, climbing a wall or sturdy arbor, or even scrambling along the ground, this is a rugged, over-the-top cultivar. It is wonderfully floriferous and simply gorgeous. And if you like C. armandii cultivars, take a look at 'Apple Blossom' as well! Pruning Group I. Zones 6-9.