Balloon Flower
Platycodon grandiflorum
Perennial, (Zone 3)
Full to Part Sun
Blooms June to August
30”-40” Tall
Plant 12”-18” apart
 
These are fantastic cut flowers, whose blooms just so happen to resemble inflated balloons about to pop. They are also deer resistant and can handle partial shade, and deadheading will encourage longer bloom times. Avoid wet soils, where the balloon flower gets bogged down  fails to thrive.