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Siskiyou Mexican Evening Primrose

Oenothera berlandieri 'Siskiyou'

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Siskiyou Mexican Evening Primrose (Oenothera berlandieri 'Siskiyou') at Ashcombe Farm & Greenhouses

Oenothera berlandieri 'Siskiyou' flowers

Oenothera berlandieri 'Siskiyou' flowers

(Photo courtesy of NetPS Plant Finder)

Height:  12 inches

Spacing:  26 inches

Sunlight:  full sun 

Hardiness Zone:  4b

Other Names:  Oenothera specioa var. childsii

Description:

A compact, prostrate plant with flowers stalks holding shell- to rose-pink cup-shaped flowers above the plant; a vigorous ground-hugging grower, makes an excellent ground cover

Ornamental Features

Siskiyou Mexican Evening Primrose has masses of beautiful lightly-scented shell pink cup-shaped flowers with rose overtones and yellow eyes along the stems from late spring to early fall, which are most effective when planted in groupings. Its oval leaves remain olive green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

Siskiyou Mexican Evening Primrose is an herbaceous perennial with a ground-hugging habit of growth. 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 high maintenance plant that will require regular care and upkeep, and is best cleaned up in early spring before it resumes active growth for the season. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Spreading

Siskiyou Mexican Evening Primrose is recommended for the following landscape applications;

  • Mass Planting
  • Border Edging
  • General Garden Use
  • Groundcover
  • Naturalizing And Woodland Gardens

Planting & Growing

Siskiyou Mexican Evening Primrose will grow to be about 12 inches tall at maturity, with a spread of 30 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 26 inches apart. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 10 years.

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 somewhat tolerant of urban pollution. 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  Edging  Garden  Groundcover  Naturalizing 
Applications
Flowers 
Ornamental Features