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Plant Encyclopedia
perennial

Cushion Spurge

Euphorbia polychroma

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Cushion Spurge (Euphorbia polychroma) at The Green Spot Home & Garden

Cushion Spurge in bloom

Cushion Spurge in bloom

(Photo courtesy of NetPS Plant Finder)

Cushion Spurge (Euphorbia polychroma) at The Green Spot Home & Garden

Cushion Spurge in bloom

Cushion Spurge in bloom

(Photo courtesy of NetPS Plant Finder)

Height:  18 inches

Spread:  24 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  3a

Description:

An attractive mounding variety ideal for borders, beds and containers; dense, flattened yellow flowers make their appearance in the spring months; medium green foliage develops into an elegant red in the cooler fall weather; self-seeding

Ornamental Features

Cushion Spurge has masses of beautiful cymes of yellow flowers with chartreuse bracts at the ends of the stems from mid to late spring, which are most effective when planted in groupings. Its narrow leaves are green in colour. As an added bonus, the foliage turns a gorgeous brick red in the fall.

Landscape Attributes

Cushion Spurge is an herbaceous perennial with a mounded form. 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 is a relatively low maintenance plant, and should only be pruned after flowering to avoid removing any of the current season's flowers. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Self-Seeding

Cushion Spurge is recommended for the following landscape applications;

  • Mass Planting
  • Border Edging
  • General Garden Use
  • Container Planting

Planting & Growing

Cushion Spurge will grow to be about 18 inches tall at maturity, with a spread of 24 inches. It grows at a medium 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. It is not particular as to soil pH, but grows best in sandy soils. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is not originally from North America, and parts of it are known to be toxic to humans and animals, so care should be exercised in planting it around children and pets. It can be propagated by cuttings.

Cushion Spurge 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 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. 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.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Edging  Garden  Container 
Applications
Flowers  Fall Color 
Ornamental Features

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