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perennial

Green Ball Sweet William

Dianthus barbatus 'Green Ball'

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Green Ball Sweet William (Dianthus barbatus 'Green Ball') at Echter's Nursery & Garden Center

Green Ball Sweet William flowers

Green Ball Sweet William flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  8 inches

Flower Height:  14 inches

Spacing:  8 inches

Sunlight:  full sun 

Hardiness Zone:  3a

Other Names:  Perennial Sweet William

Group/Class:  Green Trick Series

Description:

Long lasting light green flowers made up of soft, hairy filaments that look like a moss ball; an unusual garden or container accent, that also looks great in a table arrangement

Ornamental Features

Green Ball Sweet William features showy spikes of fragrant light green ball-shaped flowers at the ends of the stems from mid spring to mid fall. The flowers are excellent for cutting. Its tomentose pointy leaves remain dark green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Green Ball Sweet William 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 plant will require occasional maintenance and upkeep, and should only be pruned after flowering to avoid removing any of the current season's flowers. 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;

  • Self-Seeding

Green Ball Sweet William is recommended for the following landscape applications;

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

Planting & Growing

Green Ball Sweet William will grow to be about 8 inches tall at maturity extending to 14 inches tall with the flowers, with a spread of 12 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 8 inches apart. Its foliage tends to remain low and dense right to the ground. It grows at a medium rate, and tends to be biennial, meaning that it puts on vegetative growth the first year, flowers the second, and then dies. However, this species tends to self-seed and will thereby endure for years in the garden if allowed.

This plant should only be grown in full sunlight. 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 highly tolerant of urban pollution and will even thrive in inner city environments. 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.

Green Ball Sweet William 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 larger 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  Edging  Garden  Container 
Applications
Flowers  Attracts Wildlife 
Ornamental Features

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