Dwarf Balloon Flower
Zone 3 - 9
Compact newer introduction.  Pure white flowers.  Easy, very hardy perennial for the mid-to-late summer garden.   As the flower develops it seems to inflate into a small balloon, then bursts into a single, star-shaped flower.  Wonderful in a group.  For sun to partial shade in ordinary garden soil.  Even does well in our shade garden.  Slow to emerge in spring so mark the spot well.    HEIGHT:   20-25 cm   SPREAD:  35-40 cm
Image courtesy of NVK Holdings
1 gallon container size