Plant Library

perennial

White Spreading Phlox

Phlox diffusa 'Alba'

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White Spreading Phlox (Phlox diffusa 'Alba') at Glasshouse Nursery

White Spreading Phlox flowers

White Spreading Phlox flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  2 inches

Flower Height:  3 inches

Spacing:  20 inches

Sunlight:  full sun 

Hardiness Zone:  3a

Description:

Very horizontal, spreading plants with small clusters of rounded white flowers with a gold eye; very eye-catching, ideal for alpine and xeriscape applications

Ornamental Features

White Spreading Phlox is blanketed in stunning lightly-scented white star-shaped flowers with gold eyes at the ends of the stems from mid spring to mid summer, which emerge from distinctive violet flower buds. Its small glossy narrow leaves remain green in colour throughout the year.

Landscape Attributes

White Spreading Phlox is a dense herbaceous evergreen perennial with a ground-hugging habit of growth. It brings an extremely fine and delicate texture to the garden composition and should be used to full effect.

This is a relatively low maintenance plant, 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 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.

White Spreading Phlox is recommended for the following landscape applications;

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

Planting & Growing

White Spreading Phlox will grow to be only 2 inches tall at maturity extending to 3 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 20 inches apart. Its foliage tends to remain low and dense right to the ground. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years. As an evegreen perennial, this plant will typically keep its form and foliage year-round.

This plant should only be grown in full sunlight. It prefers dry to average moisture levels with very well-drained soil, and will often die in standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for a low-water garden or xeriscape application. 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. Consider covering it with a thick layer of mulch in winter to protect it in exposed locations or colder microclimates. This is a selection of a native North American species. 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.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Rock  Edging  Garden  Groundcover 
Applications
Flowers  Texture  Attracts Wildlife 
Ornamental Features