Wisteria 'Amethyst Falls'

'Amethyst Falls', like other wisteria, is a strong grower, reaching 30 feet or more. It is, however, not invasive like its Asian cousins. This native variety is less vigorous and easier to manage.

This variety flowers sooner than the Asian types (some of which can take 10 years or more), blooming its first season with fragrant, vivid blue flowers on 4- to 6-inch racemes that appear in spring and repeat all summer. Its blooms also arrive about two weeks later than others, so late-winter frosts seldom affect flowering.

The many attributes of 'Amethyst Falls', which include its deer and drought tolerance and its disease-resistant foliage, earned it a Georgia Gold Medal in 2006. This gorgeous vine is a perfect choice for pergolas, trellises, fences, arbors, and containers, attracting butterflies to the garden all summer long. It can also be trained as a free-standing tree—tie it to a sturdy 5- or 6-foot stake and prune the top to encourage branching.

Pruning should occur in late winter to shape and remove any undesirable growth. Another light trim after the first flush of flowers will improve branching and produce an encore bloom.