Seeds from this hard to find Queens Wreath vine, Bluebird Vine, Sandpaper Vine Petrea volubilis. This cold tender climber produces sprays of bright blue 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 blue flowers that look wonderful over fences and arbors.