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Sweet Pea Shrub

Polygala myrtifolia

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Sweet Pea Shrub (Polygala myrtifolia) at Lakeshore Garden Centres

Sweet Pea Shrub flowers

Sweet Pea Shrub flowers

(Photo courtesy of NetPS Plant Finder)

Sweet Pea Shrub (Polygala myrtifolia) at Lakeshore Garden Centres

Sweet Pea Shrub in bloom

Sweet Pea Shrub in bloom

(Photo courtesy of NetPS Plant Finder)

Height:  8 feet

Spread:  8 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  9a

Other Names:  Sweet Pea Bush

Description:

A pretty upward growing shrub with evergreen foliage; vivid purple winged flowers with a whitish crest on and off through the year with a peak flush in spring; an excellent windbreak or screen; very drought tolerant once established

Ornamental Features

Sweet Pea Shrub features dainty clusters of violet pea-like flowers with white overtones at the ends of the branches in mid spring. The flowers are excellent for cutting. It has green evergreen foliage. The oval leaves remain green throughout the winter.

Landscape Attributes

Sweet Pea Shrub is a multi-stemmed evergreen shrub with an upright spreading habit of growth. Its average texture blends into the landscape, but can be balanced by one or two finer or coarser trees or shrubs for an effective composition.

This is a relatively low maintenance shrub, and can be pruned at anytime. It has no significant negative characteristics.

Sweet Pea Shrub is recommended for the following landscape applications;

  • Accent
  • Rock/Alpine Gardens
  • General Garden Use
  • Container Planting

Planting & Growing

Sweet Pea Shrub will grow to be about 8 feet tall at maturity, with a spread of 8 feet. It has a low canopy, and is suitable for planting under power lines. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 20 years.

This shrub does best in full sun to partial shade. 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 xeriscaping or the moisture-conserving landscape. It is not particular as to soil type or pH, and is able to handle environmental salt. It is somewhat tolerant of urban pollution. This species is not originally from North America.

Sweet Pea Shrub makes a fine choice for the outdoor landscape, but it is also well-suited for use 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. It is even sizeable enough that it can be grown alone in a suitable container. Note that when grown in a container, it may not perform exactly as indicated on the tag - this is to be expected. Also note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden. Be aware that in our climate, most plants cannot be expected to survive the winter if left in containers outdoors, and this plant is no exception. Contact our experts for more information on how to protect it over the winter months.

This plant is not reliably hardy in our region, and certain restrictions may apply; contact the store for more information.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Accent  Rock  Garden  Container 
Applications
Flowers 
Ornamental Features