Many Group 1 clematis flower in late winter and early spring, so they're well-worth considering if you're after some early colour in the garden. Plus, many Group 1 clematis have rich fragrance to appreciate.
Clematis in Group 1 are those that flower on wood created the previous year, so don't require pruning. However, if you're growing a vigorous clematis in need of cutting back, such as Clematis montana, you can cut them back immediately after flowering.
Not sure how to grow your clematis? Take a look at these tips on training climbing plants for ideas and inspiration.
Discover some of our favourite Group 1 clematis to grow, below.