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perennial

Silver Speedwell

Veronica spicata ssp. incana

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Silver Speedwell (Veronica spicata ssp. incana) at A Very Successful Garden Center

Silver Speedwell flowers

Silver Speedwell flowers

(Photo courtesy of NetPS Plant Finder)

Silver Speedwell (Veronica spicata ssp. incana) at A Very Successful Garden Center

Silver Speedwell foliage

Silver Speedwell foliage

(Photo courtesy of NetPS Plant Finder)

Silver Speedwell (Veronica spicata ssp. incana) at A Very Successful Garden Center

Silver Speedwell flowers

Silver Speedwell flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  12 inches

Flower Height:  24 inches

Spacing:  18 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  3a

Other Names:  Woolly Speedwell, Spike Speedwell, Ironweed

Description:

An upright, clump forming perennial producing spikes of tiny, star shaped, violet-blue flowers rising above the foliage all summer long; narrow, gray-green leaves are densely covered with silvery hairs; does not do well in hot, humid summers

Ornamental Features

Silver Speedwell has masses of beautiful spikes of violet flowers with blue overtones rising above the foliage from late spring to late summer, which are most effective when planted in groupings. The flowers are excellent for cutting. Its attractive tomentose narrow leaves remain grayish green in color with hints of silver throughout the season. The silver stems can be quite attractive.

Landscape Attributes

Silver Speedwell is a dense herbaceous perennial with an upright spreading habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

This plant will require occasional maintenance and upkeep, 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. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Disease

Silver Speedwell is recommended for the following landscape applications;

  • Mass Planting
  • Border Edging
  • General Garden Use
  • Naturalizing And Woodland Gardens
  • Container Planting

Planting & Growing

Silver Speedwell will grow to be about 12 inches tall at maturity extending to 24 inches tall with the flowers, 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 fast 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 full sun to partial shade. It is very adaptable to both dry and moist growing conditions, but will not tolerate any standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for a low-water garden or xeriscape application. This plant should not require much in the way of fertilizing once established, although it may appreciate a shot of general-purpose fertilizer from time to time early in the growing season. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is not originally from North America. It can be propagated by division.

Silver Speedwell 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. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Edging  Garden  Naturalizing  Container 
Applications
Flowers  Foliage Color  Bark  Attracts Wildlife 
Ornamental Features