perennial

Cortusa Primrose

Primula cortusoides

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Cortusa Primrose (Primula cortusoides) at Canadale Nurseries

Cortusa Primrose flowers

Cortusa Primrose flowers

(Photo courtesy of NetPS Plant Finder)

Cortusa Primrose (Primula cortusoides) at Canadale Nurseries

Cortusa Primrose in bloom

Cortusa Primrose in bloom

(Photo courtesy of NetPS Plant Finder)

Plant Height:  4 inches

Flower Height:  12 inches

Spacing:  6 inches

Sunlight:  partial shade  full shade 

Hardiness Zone:  2a

Other Names:  Cowslip, Polyanthus

Ornamental Features

Cortusa Primrose features delicate clusters of pink star-shaped flowers with yellow eyes at the ends of the stems in mid spring. Its small serrated oval leaves remain lime green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Cortusa Primrose is an herbaceous perennial with tall flower stalks held atop a low mound of foliage. It brings an extremely fine and delicate texture to the garden composition and should be used to full effect.

This plant will require occasional maintenance and upkeep, and should be cut back in late fall in preparation for winter. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Self-Seeding

Cortusa Primrose is recommended for the following landscape applications;

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

Planting & Growing

Cortusa Primrose will grow to be only 4 inches tall at maturity extending to 12 inches tall with the flowers, with a spread of 8 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 6 inches apart. Its foliage tends to remain low and dense right to the ground. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 5 years.

This plant does best in partial shade to shade. It does best in average to evenly moist conditions, but will not tolerate standing water. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution, and will benefit from being planted in a relatively sheltered location. Consider covering it with a thick layer of mulch in winter to protect it in exposed locations or colder microclimates. This species is not originally from North America.

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