VANDERMEER
PLANT LIBRARY
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Heavy Metal® Astilbe
Astilbe x arendsii 'Heavy Metal'
Height: 30 inches
Spacing: 18 inches
Sunlight:
Hardiness Zone: 4a
Other Names: False Spirea
Group/Class: Music™ Series
Brand: Compass Plants BV
Description:
Striking, fluffy, cherry red plumes rise above rich dark green foliage; perfect in a shady spot with dappled light, either in the garden or containers; prefers even moisture, so water regularly for abundant flowers and nice foliage
Ornamental Features
Heavy Metal® Astilbe has masses of beautiful plumes of cherry red 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 colour throughout the season. The dark red stems can be quite attractive.
Landscape Attributes
Heavy Metal® 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 bees and 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.
Heavy Metal® Astilbe is recommended for the following landscape applications;
- Mass Planting
- General Garden Use
Planting & Growing
Heavy Metal® Astilbe will grow to be about 24 inches tall at maturity, with a spread of 24 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 18 inches apart. 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 not particular as to soil pH, but grows best in rich 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 particular variety is an interspecific hybrid. 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.