Oenothera speciosa 'Siskiyou' Evening Primrose



Oenothera speciosa 'Siskiyou' produces 2" pink, cup-shaped flowers most of the early summer. Also called Evening Primrose or Pinkladies, Oenothera 'Siskiyou' blooms are open during the day. 'Siskiyou' is a rapidly spreading perennial plant that makes a deciduous ground cover, but it should be contained as it is very aggressive. Plants spread both by rhizomes and by seed.

Oenothera speciosa is native to much of the United States, excepting the northern tier from Washington and Oregon to Maine and parts of the Rocky Mountains. It is naturally found in rocky prairies and plains, but is also commonly seen in fields, waste areas, roadsides and other disturbed areas.

Oenothera speciosa 'Siskiyou' prefers full sun and average to poor, well-drained soil. It it very tolerant of hot sites and infertile, dry soils.


  • Common Names: Pink Evening Primrose, Pinkladies
  • Zones: 5-8
  • Light Requirements: Full Sun to Light Shade
  • Soil Preference: Prefers dry to average, well-drained soil
  • Height at Maturity: 12-18
  • Width at Maturity: 24-36
  • Bloom Color: Pink
  • Bloom Time: Late spring to middle summer

Special Features

  • Attracts: Butterflies.
  • Tolerates: Rabbits. Drought. Juglone.
  • Other Features: Native to North America.

Care and Growing Tips

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Shipping Info

We will ship your plants within nine days of placing the order, on either a Monday or a Tuesday. We ship early in the week to ensure that plants do not get stranded in transit over the weekend. You'll receive a tracking number when your order ships.

We appreciate your patience while our small team works to get these live plants to you safely.


    If you need your plants shipped a specific week, please make a note on the Cart page before placing the order, or reply to your order confirmation email. Thank you!

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    All ship times are subject to change if extreme weather conditions are present here at the nursery or at the shipping destination.

    Please note: Depending on the time of year, the foliage of the plants may be trimmed to fit into our shipping boxes. This could delay the flowering of the plant, but many perennials actually benefit from being cut back.

    We are currently not able to ship to Puerto Rico, Hawaii, and outside of the US.