How To Prune Petrea Volubilis. Planting the Sandpaper Vine in the Ground. The branch thickness varied from 12 inch up to 1 inch.
From what Ive read the Queens Wreath thrives for areas in Zone 10 and above. Best growing conditions are - full sun to light shade - use a trellis pergola or structure to help the plant grow upwards - prefers fertile well drained soil. There are between 15-30 flowers arranged in pairs in each raceme.
If grown permanently outdoors avoid training up a tree.
Rather than throw them away I cut the branches further and put them in a pail of water. Petrea is hardy to the high 20s but not much colder. The cut lengths were anywhere from 1 foot to 2 feet. But the canopy of the vine is where I will allow branches to grow flourish and flower.