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Pest Information

Showy Evening Primrose

Showy Evening Primrose

  • Latin Name: Oenothera Speciosa
  • Common Name: Showy Evening Primrose
  • Other Names: Mexican primrose

Pest Details

Showy Evening Primrose
Showy Evening Primrose


Native to the southern United States, but sold as a drought resistant garden ornamental and groundcover throughout the U.S., from which it commonly escapes to other habitats.


A very drought resistant perennial that spreads by seeds or its underground rootstock. It forms dense patches very quickly, and grows fastest in spring.


Stems may quickly spread along the soil or form erect to over 1.5 feet tall. In cooler climates the foliage dies back completely in the winter months. Leaves are elongate-oval, with lobed margins, and up to 3 inches long. Flowers form in spring and early summer, and they are large and showy and bright pink to white. The four petals open wide to form a flower up to 3 inches across.

Characteristicts Important to Control:

A perennial that resists desiccation and spreads from underground rootstock. Physical removal would need to be very thorough to remove all this material.

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