Photo: KimCC BY 4.0via iNaturalistresized / cropped
Balloon Flower Plant Care
Platycodon grandiflorus A.DC.
Updated · Sources · How we source care data
Platycodon grandiflorus is a species of herbaceous flowering perennial plant of the family Campanulaceae, and the only member of the genus Platycodon. It is native to East Asia.
Every 7–10 days
Full sun to part shade
65–75°F
40–60%
At a glance
How do you care for Balloon Flower?
Water Balloon Flower every 7–10 days, letting the top layer of soil dry out between waterings, and give it full sun to part shade. It prefers temperatures of 65–75°F (18–24°C) and 40–60% humidity. Fertilize it every 6 months during the growing season.
Where Is the Balloon Flower Native To?
What Is the Balloon Flower?
Balloon Flower (Platycodon grandiflorus) belongs to the Campanulaceae family within the Platycodon genus. Balloon Flower is native to East Asia. Balloon Flower is also known as Chinese Bellflower, Japanese Bellflower.
Balloon Flower displays an upright, clumping perennial growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Balloon Flower produces bell-shaped flowers in blue, white, or pink.
Leaf size: approximately 3 inches.
How Often Should You Water a Balloon Flower?
Platycodon grandiflorus requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Balloon Flower Need?
Balloon Flower thrives in full sun to part shade.
Light Requirement
Full sun to part shade
What Temperature and Humidity Does the Balloon Flower Prefer?
Platycodon grandiflorus grows best at temperatures of 65–75°F. Balloon Flower prefers humidity levels of 40–60%.
Temperature
65–75°F
Humidity
40–60%
What Soil Mix Works Best for a Balloon Flower?
Well-draining, fertile loam with added compost for moisture retention. Good drainage is essential for Balloon Flower to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Balloon Flower?
Feed Balloon Flower every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Balloon Flower?
Repot every 2-3 years in early spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Balloon Flower?
Balloon Flower can be propagated through seeds, division of root ball.
Is the Balloon Flower Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Balloon Flower, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Balloon Flower?
Balloon Flower is susceptible to aphids, slugs, snails. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Balloon Flower Need?
Balloon Flower grows outdoors in USDA Zone 3a – 8b. It survives winters down to planting zone 3a. Balloon Flower is native to East Asia.
Hardiness Zone
Zone 3a – 8b
Keep exploring plants
Balloon Flower is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Platycodon genus — compare its care with other Platycodon species on PlantoScan.
Platycodon is part of the Campanulaceae plant family — browse all Campanulaceae genera and species.
Balloon Flower thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Platycodon grandiflorus A.DC., family Campanulaceae (first published in Monogr. Campan. : 125 (1830)) — World Flora Online record, IPNI name record, Wikidata.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Balloon Flower, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Kim, CC BY 4.0, iNaturalist — original.
- Hardiness zone: USDA Zone 3a – 8b, estimated from the plant's typical growing conditions.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
Identify Plants Like the
Balloon Flower Instantly
Scan any plant with your phone camera and get instant ID, care tips, water and fertilizer reminders, and health checks — all in one app.
Free
to download
iOS & Android
platforms
Light & dark
mode
100,000+
species