Seeds from this hard to find White Queens Wreath vine, Sandpaper Vine Petrea volubilis Alba. This cold tender climber produces sprays of creamy white star shaped petals. Blooms in spring and continues into summer in full to part sun. Ideal for warm humid climates, reaching over 30 feet in warmer climates, also can be pot grown to keep it smaller. This plant is an attraction to many butterflies that produces 12 inch long white flowers that look wonderful over fences and arbors. Zones 9 to 11.