Also known as Old Man’s Beard, Clematis Vitalba is a massively impressive, vigorous climber for the wild garden. It is commonly seen growing in hedgerows where it stands out in the autumn and winter when it’s covered in fluffy white seed heads. They poke through the bare branches of neighbouring trees and shrubs, livening up the view and it’s easy to see why it is also called Traveller’s joy. Though it can be cut back in early spring, it will still shoot out by 5m and more over the summer. This is not a climber for small gardens or those who like everything fussily neat and formal.