Petrea volubilis Queens Wreath Vine - Bluebird Vine - Sandpaper Vine - Seeds 20. Petrea volubilis flowers year round. Is an espectacular vine with no thorns. You can cut the flower vine a few days before they dry and enjoy them in flower pots inside the house. When the flowers are dry, you can throw them up in the air and and enjoy their swirling motion with your kids or just yourself!!!
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