- Balloon flower
Botanical name: platycodon grandiflorus
Beginner friendly?: no
Average size at maturity: about 3 ft in height and 2 ft in width
Bloom time: summer/fall
Hardy zone: zones 3-9
Flower color: blue, white, pink, purple
Foliage color: green
Growth rate: grows 1-2 ft per year
Pruning instructions: deadhead as needed
Propagation methods: propagate through seed-sowing in the spring
Landscape use: ideal for wide borders
Light needs: 6 hours of sun per day
Special features: very cold-hardy
Watering instructions: keep soil moist but not soggy and allow the first 1-2 inches of soil to dry between watering sessions
Fertilizing instructions : use a flower food feed once a month throughout the growing season
Best time to plant: spring
Best type of soil: loam
Companion plants: lavender, catmint, coreopsis
Toxicity level: toxic for humans if ingested but non-toxic for pets
Invasive species: no
