(Balloon Flower) Add a splash of white to your garden by day or a shining glow of white by night. Platycodon 'Astra Semi Double White' is a wonderful new dwarf variety of Balloon Flower! 'Astra' Platycodons are a new series that form compact, well branched plants. The interesting balloon-like buds burst open into bell-shaped double flowers. Standing up to 12 inches tall, 'Astra Semi Double White' prefer to be grown in full sun to part shade locations with good drainage. The compact habit of 'Astra Semi Double White' also make it ideal for pots or mixed containers. Enjoy this deer resistant variety in your garden.