perennial

Astra Double Blue Balloon Flower - New For 2018!

Platycodon grandiflorus 'Astra Double Blue'

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Astra Double Blue Balloon Flower (Platycodon grandiflorus 'Astra Double Blue') at Sargent's Gardens

Astra Double Blue Balloon Flower flowers

Astra Double Blue Balloon Flower flowers

(Photo courtesy of NetPS Plant Finder)

Astra Double Blue Balloon Flower (Platycodon grandiflorus 'Astra Double Blue') at Sargent's Gardens

Astra Double Blue Balloon Flower in bloom

Astra Double Blue Balloon Flower in bloom

(Photo courtesy of NetPS Plant Finder)

Height:  12 inches

Spacing:  9 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  3a

Description:

Balloon-like buds swell and open in the garden to large fully double bell-shaped blue flowers with clearly defined darker veins, which seem almost too large for the stem

Ornamental Features

Astra Double Blue Balloon Flower has masses of beautiful blue bell-shaped flowers with white eyes and purple veins at the ends of the stems from early to late summer, which are most effective when planted in groupings. The flowers are excellent for cutting. Its narrow leaves remain dark green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Astra Double Blue Balloon Flower is an herbaceous perennial with a mounded form. Its relatively fine texture sets it apart from other garden plants with less refined foliage.

This is a relatively low maintenance plant, and is best cleaned up in early spring before it resumes active growth for the season. It has no significant negative characteristics.

Astra Double Blue Balloon Flower is recommended for the following landscape applications;

  • Mass Planting
  • Rock/Alpine Gardens
  • Border Edging
  • General Garden Use
  • Container Planting

Planting & Growing

Astra Double Blue Balloon Flower will grow to be about 12 inches tall at maturity, with a spread of 12 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 9 inches apart. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years.

This plant does best in full sun to partial shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. This is a selected variety of a species not originally from North America.

Astra Double Blue Balloon Flower is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. It is often used as a 'filler' in the 'spiller-thriller-filler' container combination, providing a mass of flowers against which the thriller plants stand out. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden. Be aware that in our climate, most plants cannot be expected to survive the winter if left in containers outdoors, and this plant is no exception. Contact our store for more information on how to protect it over the winter months.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Rock  Edging  Garden  Container 
Applications
Flowers 
Ornamental Features