Platycodon grandiflorus

Balloon Flower

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Herbaceous perennial noted for balloon-shaped buds opening into starry blue flowers. Deciduous, hardy in temperate zones, drought tolerant once established.
yard Outdoor plants wb_sunny Half-shade / Sun pets Pet Friendly
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Plant Details

Common Name Balloon Flower
Family Campanulaceae
Genus Platycodon
Species Grandiflorus
Origin East Asia
Blooming Summer to early autumn, star-shaped blue flowers.
Leaf Color Green (yellowing in fall)
Sunlight Half-shade / Sun
Category Outdoor plants
Pet Friendly check Yes
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Care & Maintenance

terrain
Soil

Well-draining loam rich in organic matter; avoid waterlogged conditions.

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Watering

Keep soil moist during active growth, reduce after flowering. Drought tolerant when established.

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Sunlight & Care

Full sun required for optimal blooming; tolerates partial shade.

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Fertilization

Apply balanced slow-release fertilizer in early spring before budding.

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Pruning

Cut back to ground level after frost in late autumn for winter dormancy.

Pest Control Aphid Slug Snail

These are the insects and pathogens that commonly interact with this plant, including pests, parasites, and organisms typically associated with its care.

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Seasonal Periods

local_florist Flowering Period 3 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
eco Leaf Persistence 7 months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
thermostat

Growing Parameters

thermostat
Temperature
41° – 90°
Fahrenheit
Ideal ambient air temperature range for healthy growth
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Humidity
30% – 80%
% relative
Optimal relative air humidity the plant thrives in
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Light (LUX)
3000 – 15000
Lux
Ambient illuminance level at the plant's surface
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Light (PAR)
800 – 2500
mmol/m²/s
Photosynthetically active radiation (PAR) intensity
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Soil Moisture
20% – 60%
% volumetric
Water content in the growing medium
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Soil EC
200 – 1500
mS/cm
Electrical conductivity (nutrient concentration in soil water)

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