Columbia Larkspur

Photo: Matt Palmquist, OPRD

Columbia Larkspur

Delphinium trolliifolium

Type

Category

Species Details

Family: Ranunculaceae
Rarity: Common
Flowering Time: Late Spring, Early Summer
Life Cycle: Perennial
Height: 2-6 feet
Habitat: Meadow, Woods, moist shady places in oak woods or chaparral (a type of shrubland with dense, rocky soil) at low to mid elevations
Native: Yes

Additional Information

This plant has different common names according to it’s setting. Naturalists and gardeners refer to it as Delphinium, hikers call it Larkspur or Poison Larkspur, and farmers/ranchers know it as Cow Poison.

  • Rarity: Common
  • Flowering Time: Late Spring, Early Summer
  • Life Cycle: Perennial
  • Height: 2-6 feet
  • Habitat: Meadow, Woods, moist shady places in oak woods or chaparral (a type of shrubland with dense, rocky soil) at low to mid elevations
  • Native: Yes

Sources: Wildflowers of the Pacific NorthwestOregon Flora Project

Columbia Larkspur
Photo: Matt Palmquist, OPRD

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