Photo Courtesy of Walters Gardens

Platycodon grandiflorus Astra Semi-Double Blue (Balloon Flower)

This dwarf herbaceous perennial features an abundance of navy blue buds that open to reveal semi-doubled star-shaped periwinkle blue flowers with purple veining that bloom on branched leafy stems with dense foliage. Moderate growth rate.

Blooms early to late summer
1 ft tall x 1.5 ft spread
HARDY to -40°F (-40°C)
Deer and rabbit resistant
Attracts pollinators


Zone Zone 4
Exposure Full Sun to Partial Shade
Moisture Moderate Moisture