Balloon Flower Astra Double Blue

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Shipping begins in late March based on ground temperatures, warmest zones first. Learn More…

This striking variety has golf ball-sized buds that burst open into beautiful double blue flowers. Add a dose of cool blue to your summer garden. (Platycodon grandiflorus)

Zones 3 - 8
Advantages
Groundcover
Groundcover
Light Requirements
Full Sun
Full Sun
Half Sun / Half Shade
Half Sun / Half Shade
Mature Plant Size 8-10" tall, 12-18" wide
Bloom Time Mid to late summer
SKU 5PLATG
Easy-to-grow Balloon Flowers were one of grandmothers favorites. The Platycodons have been around forever, and some of their biggest fans are children. They love to watch the balloons form (the buds) and then swell each day until suddenly, one special day, the pop open. These beautiful old-fashioned flowers are lovely in the garden and fine in the vase.
Associated SKUs
5PLATG
5PLAT3 (Bag of 3) - Out of stock.
5PLAT30 (Bag of 30) - Out of stock.
Common Name Balloon Flower
Botanical Name Platycodon grandiflorus Astra Double Blue
Zones 3, 4, 5, 6, 7, 8
Light Requirements Full Sun, Half Sun / Half Shade
Flower Color Blue
Mature Height 8-10" tall
Estimated Mature Spread 12-18" wide
Bloom Time Mid to late summer
Planting Depth Plant so that the top of the root is 1" below the soil line.
Ships As Bare Root
Foliage Color Green
Planting Time Spring / Summer
Soil Type Loamy Soil
Soil Moisture Average, Well Draining
Advantages Groundcover
Ships to Hawaii, Alaska & Canada No

Shipping begins in late March based on ground temperatures, warmest zones first.

As soon as your order is placed you will receive an order confirmation email that will include your shipping information. We ship perennials and spring-planted bulbs at the proper planting time for your hardiness zone. Perennials and spring-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you need express shipping or have any questions, please call Customer Service toll-free at (877) 309-7333 or contact us by email.

You will receive a second email the day your order ships telling you how it has been sent. Your order is scheduled to arrive at your door, fresh and ready to plant, usually within 3-5 days of leaving our warehouse, depending on your shipping address. We pack our plants to withstand up to 10 days in transit, in the event transit is delayed. We cannot guarantee arrival on a specific day. Please make sure to open your package upon receipt and follow the instructions included.

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USDA Hardiness Planting Zones

To determine if a plant is sufficiently cold hardy, the USDA created numbered zones indicating winter low temperatures; the lower the zone number the colder the winter.

  • If the coldest winter temperature expected in your area is -15°F (zone 5) then any plants rated zones 3-5 will survive the winter temperatures in your area.
  • If you live in very warm winter areas (zones 9-11) plants with zones 3-4 ratings are not recommended. The lack of freezing winter temperatures do not provide a time for winter dormancy (rest).

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