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Ozark Sundrops Wikimedia Commons
Onagraceae

Ozark Sundrops

Oenothera macrocarpa

Hidden treasure, prairie sunshine, evening light.

Family
Onagraceae
Genus
Oenothera
Native to
Central United States
Bloom season
Spring, Summer
Type
Perennial
Height
15–25 cm (6–10 in)
Sunlight
Full sun
Soil
Sandy, gravelly, well-drained
Water
Low
Hardiness
4–8
Lifespan
Long-lived perennial

Did you know

  • Ozark sundrops produce some of the largest yellow flowers of any prairie native—each lemon-yellow saucer can be over 4 inches across, the size of a small dinner plate.
  • The flowers open in late afternoon and stay open all night—they're pollinated by sphinx moths in the Ozark foothills, who hover and drink the rich nectar by moonlight.
  • After the flowers fade, huge winged seedpods develop—they're so distinctive they look like alien spacecraft and dry to a beautiful papery beige for winter interest.
  • Despite being a Great Plains native, Ozark sundrops form a low spreading mat just inches tall—the huge flowers seem to float just above the silvery-green leaves like saucers on water.
  • Native peoples of the Plains used the roots as a folk treatment for asthma—and the seeds, like all evening primroses, contain gamma-linolenic acid (GLA), a rare omega-6 fatty acid valued in skincare.

Color meanings

0

hidden treasure

1

prairie sunshine

2

evening light

Uses

  • Rock gardens
  • Drought-tolerant landscaping
  • Prairie gardens
  • Native plant gardens