Astilbe, Chinese Astilbe 'Superba'

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P0670-C

A large vigorous plant with purple flowers. Late season flowering.

Superba Astilbe | Astilbe chinensis 'Superba'

Height:  4 feet

Spread:  3 feet

Sunlight: part sun to full shade

Hardiness Zone:  3a

Other Names:  False Spirea, Chinese Astilbe

Brand:  Gertens

Description:

Imposing, airy, deep lilac plumes; this astilbe has outstanding form, it's plumes stretch out towards the sky; flowers rising above glossy foliage; perfect in a shady spot with dappled light; prefers moisture so water regularly for abundant flowers

Ornamental Features

Superba Astilbe has masses of beautiful plumes of lilac purple flowers at the ends of the stems from early to mid summer, which are most effective when planted in groupings. The flowers are excellent for cutting. Its ferny compound leaves remain dark green in color throughout the season.

Landscape Attributes

Superba Astilbe is an herbaceous perennial with an upright spreading habit of growth. 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 is a good choice for attracting butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. It has no significant negative characteristics.

Superba Astilbe is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Container Planting

Planting & Growing

Superba Astilbe will grow to be about 4 feet tall at maturity, with a spread of 3 feet. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years. As an herbaceous perennial, this plant will usually die back to the crown each winter, and will regrow from the base each spring. Be careful not to disturb the crown in late winter when it may not be readily seen!

This plant does best in partial shade to shade. It requires an evenly moist well-drained soil for optimal growth. It is very fussy about its soil conditions and must have rich, acidic soils to ensure success, and is subject to chlorosis (yellowing) of the foliage in alkaline soils. It is somewhat tolerant of urban pollution, and will benefit from being planted in a relatively sheltered location. Consider applying a thick mulch around the root zone over the growing season to conserve soil moisture. This is a selected variety of a species not originally from North America. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

Superba Astilbe is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. It is even sizeable enough that it can be grown alone in a suitable container. 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 experts for more information on how to protect it over the winter months.

More Information
Bloom or Harvest Time July, August
Sun Preference Part-Sun, No-Sun
USDA Hardiness Zone 3, 4, 5, 6, 7, 8
Common Family Name False Spirea
Mature Spread (Range) 24" - 36"
Mature Height (Range) 37" - 48"
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