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annual

Sunset Velvet Shamrock

Oxalis vulcanicola 'Sunset Velvet'

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Sunset Velvet Shamrock (Oxalis vulcanicola 'Sunset Velvet') at Echter's Nursery & Garden Center

Oxalis vulcanicola 'Sunset Velvet' flowers

Oxalis vulcanicola 'Sunset Velvet' flowers

(Photo courtesy of NetPS Plant Finder)

Sunset Velvet Shamrock (Oxalis vulcanicola 'Sunset Velvet') at Echter's Nursery & Garden Center

Oxalis vulcanicola 'Sunset Velvet' foliage

Oxalis vulcanicola 'Sunset Velvet' foliage

(Photo courtesy of NetPS Plant Finder)

Height:  8 inches

Spacing:  10 inches

Sunlight:  full sun  partial shade  full shade 

Hardiness Zone:  (annual)

Ornamental Features

Sunset Velvet Shamrock's attractive small fan-shaped compound leaves remain lime green in color with hints of coppery-bronze throughout the season. It features subtle yellow tubular flowers at the ends of the stems from late spring to early summer. The fruit is not ornamentally significant. The fuchsia stems can be quite attractive.

Landscape Attributes

Sunset Velvet Shamrock is a dense herbaceous annual with a mounded form. Its relatively fine texture sets it apart from other garden plants with less refined foliage.

This plant will require occasional maintenance and upkeep, and should be cut back in late fall in preparation for winter. It has no significant negative characteristics.

Sunset Velvet Shamrock is recommended for the following landscape applications;

  • Mass Planting
  • Rock/Alpine Gardens
  • General Garden Use
  • Groundcover
  • Container Planting
  • Hanging Baskets

Planting & Growing

Sunset Velvet Shamrock will grow to be about 8 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 10 inches apart. Its foliage tends to remain low and dense right to the ground. Although it's not a true annual, this fast-growing plant can be expected to behave as an annual in our climate if left outdoors over the winter, usually needing replacement the following year. As such, gardeners should take into consideration that it will perform differently than it would in its native habitat.

This plant performs well in both full sun and full shade. It requires an evenly moist well-drained soil for optimal growth, but will die in standing water. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. 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 cuttings; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

Sunset Velvet Shamrock is a fine choice for the garden, but it is also a good selection for planting in outdoor containers and hanging baskets. It is often used as a 'filler' in the 'spiller-thriller-filler' container combination, providing a mass of flowers and foliage 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.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Rock  Garden  Groundcover  Container  Basket 
Applications
Flowers  Foliage Color  Texture  Bark 
Ornamental Features

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