This perennial has upright slender stems that form a bushy rounded clump. It has lanced-shaped blue-green leaves and the profuse erect blue bell-shaped flowers appear in a cluster above the foliage during summer. 

Hardiness zones 4 to 10 

Platycodon grandiflorus is naturally found from China to Japan growing in well drained fertile moist sandy to light clay loams that are rich and organic. It prefers an open sunny position and is frost tolerant but drought tender.
 
Balloon Flower is grown for its attractive colourful flowers. It is planted in perennial borders in small or cottage gardens or used in rockeries. It is also planted in patio pots and planter boxes and used in drifts in large gardens. It is fast growing, establishing in one season and may require staking but should be left undisturbed. The flowers are also cut and used in arrangements. ID 830

Platycodon (plă-tee-KŌ-don) grandiflorus (grănd-i-FLŌ-rus)

Campanulaceae (kam-pan-yew-LAY-see-ee)
Bellflower and Lobelia Family