Growing guide · Perennials

Platycodon grandiflorus

How to grow Balloon Flower 'Astra Blue'.

The buds puff up, then pop.

Light
Full sun, part sun
Water
Moderate
Zones
3–8
Size
8–12 in. tall, 8–12 in. wide
Spacing
10–12 in. apart.
Pets
Not on the ASPCA pet-safe list; keep it out of reach
See sizes · from $31.99
Compact balloon flower with violet-blue star-shaped flowers and puffy balloon-shaped buds

Light

Full sun or light afternoon shade.

Water

Water weekly; don't let it sit wet.

Planting and soil

Plant in spring in well-drained soil with the crown at soil level. Pick the spot carefully; it has a deep taproot.

Feeding

A little compost in spring.

Pruning

Deadhead to extend bloom. Cut back after frost.

Through the year

Emerges late, often late May. Flowers June to August.

If something's off

Easy to dig up by accident in spring. Rabbits and deer may nibble.

Plays well with

Plant it with friends.

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Why we stock it: An unusual flower that kids and adults both pop, in true blue.

That's everything we know about growing it. Thanks for reading.

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Kits with Balloon Flower 'Astra Blue'.

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The Blue Period Blue garden kit The Blue Period Every blue a garden can do. SalviaSpeedwellCatmintBalloon flowerRozanneZones 4–812 plants · $374.884 × 8 ft bed
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