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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

Origin:

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.

Biology:

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

Identification:

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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