Oenothera macrocarpa subsp. incana


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Pewter Moon Evening Primrose. A fine very large flowered form with green to gray leaves and reddish stems. Big rounded golden yellow flowers open at dusk and carry on well into the next day. A good hardy and drought tolerant plant that works it in the rock garden or Garden of Neglect. Worth growing just to watch the Sphinx Moths go delirious in the gloaming. Good drainage.


Plant Type

  • Perennial / Bulb

Mature Size

6" x 16"

Hardiness Zones

  • Zone 4a (-30 °F)
  • Zone 4b (-25 °F)
  • Zone 5a (-20 °F)
  • Zone 5b (-15 °F)
  • Zone 6a (-10 °F)
  • Zone 6b (-5 °F)
  • Zone 7a (0 °F)
  • Zone 7b (5 °F)
  • Zone 8a (10 °F)
  • Zone 8b (15 °F)

Sun Exposure

  • Full Sun

Water Needs

  • Moderate
  • Dry

Bloom Time

  • Summer