Petrea volubilis or 'Purple Wreath' is an ideal substitute for Wisteria in the tropics and subtropics, Petrea volubilis is regarded as the best blue flowering climber for the climate. Actual flowers are small, blue blossoms surrounded by large, blue sepals. After the flower dies the sepals retain their colour for many weeks, slowly fading before falling off the vine. Leaves are rough with a sandpaper-like texture, and may be semi-deciduous during cold winter periods in cooler districts.
A great substitute for Wisteria if you live in a warm climate. Perfect for training over pergolas or climbing up walls and trellis.