Columbian Larkspur | Delphinium trolliifolium - Benton Soil And Water Conservation District

Columbian Larkspur | Delphinium trolliifolium

A cluster of vibrant blue flowers among lush green foliage in a forest setting.

Photo Credit: https://creativecommons.org/licenses/by/2.0/

The image features a close-up of a vibrant purple flower against a bright sky, surrounded by greenery.

A vibrant display of blue flowers amidst green foliage in a sunny outdoor setting, likely at a nursery or garden.

Large, deep brilliant blue flower. Upper two petals are sometimes milky white, and the spur exceeds an inch in length in the largest of the flowers. Leaves are large, shiny, and deeply lobed. Caution: plant is extremely toxic to livestock!

Plant Details

Habitats	Riparian Forests, Bottomland Forests, Mixed Hardwood-Conifer Forest or Woodland
Habitat Notes	Prefers moist shady woodlands and along stream banks.
Phenology	Perennial; flowering April-June
Mature Height	2-5"
Shade Preference	Part shade, shade
Soil Tolerance	Moist, well-drained soil
Special Uses	Attracts insects, bees, butterflies, and hummingbirds; ornamental

A close-up of a bee collecting nectar from delicate pink flowers, showcasing nature's pollination process.

Native Plant Database

We have a large searchable database of plants that are native to the Willamette Valley and other parts of Benton County. View images and filter the list by plant characteristics

A cluster of unique, dark-colored flowers among vibrant green foliage and other colorful wildflowers.

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A lush green riparian forest with tall red alder trees and a rocky stream running through it.

Riparian Forests

Riparian areas are defined by NRCS as ecosystems that occur along waterways and water bodies. They serve as the transition between aquatic and terrestrial zones.

Bottomland Forests

Bottomland forests are generally used to describe forests which are comprised of both hardwood and softwood tree species that occur on low-elevation, alluvial floodplains or lower terraces of rivers…

A dense forest with tall trees and lush green undergrowth.

Mixed Hardwood-Conifer Forest or Woodland

Mixed hardwoods and conifers characterize this habitat which is widespread in western Oregon in the medium elevations of the hills of the Coast Range. Precipitation is higher in this habitat than in…