Clematis MontanaClematis Montana Clematis montana Clematis montana is the one to choose if you want to cover something properly. It's the most vigorous of all the climbing clematis and in late spring it does something spectacular every stem disappears under a mass of small, scented flowers in white or pink. It's one of those moments in the garden that genuinely stops people in their tracks. Native to the mountains of Asia from the Himalayas to China montana means