The trumpet vines that belong to the genus Distictis are highly colorful evergreen flowering vines with lush, glossy foliage and large, trumpet-shaped flowers. Varieties grown in the Inland Empire are fast growing, have tendrils and dark glossy green leaflets. Tubular flowers grow to 4 in. long and are brightly colored red or blue. These vines come from subtropical climates where they are adapted to summer heat, but not extreme winter cold. They grow fastest when planted in loamy soils, sun to partial shade, and sustained with regular water. Species and cultivars found in nurseries can grow to 30 ft. and longer over time; pruning can keep them smaller in size.
The common Blood-red trumpet vine, D. buccinatoria, is the most common choice found in cultivation. It is well suited to growing on fences, large trellises and for cascading over large slopes. This is the most cold tolerant species, surviving temperatures below 25° F. The Royal trumpet vine, D. ‘Rivers’, produces attractive purple-blue to lavender colored flowers. These vines are grown on walls along freeways and in residential landscapes throughout the Inland Empire.