Platycodon grandiflorus POP STAR™ Blue (Pop Star™ Blue Balloon Flower) A fun perennial, ‘Pop Star’ Balloon Flower features flower buds that swell into huge plump balloon-like orbs then pop open to reveal huge star-shaped violet blue, star-shaped blossoms. It has a very compact habit, growing only 6-8″ tall and 10-12″ wide. Long blooming, you can expect to see its beautiful blossoms throughout summer. (Replaces P. Sentimental Blue)

Part of the Northern Sunset brand, it prefers rich, moist to well-drained soil in full sun to part shade.

(Image courtesy of Benary)