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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Delphinium trolliifolium (Columbian larkspur)
Bransford, W.D. and Dolphia

Delphinium trolliifolium

Delphinium trolliifolium A. Gray

Columbian Larkspur, Cow Poison

Ranunculaceae (Buttercup Family)


USDA Symbol: DETR2

USDA Native Status: L48 (N)

A stately plant with stout, hollow, leafy, generally tall stems and bilaterally symmetrical, deep purplish-blue flowers in long loose racemes; upper stems and flower stalks commonly covered with minute, yellowish hairs.

This handsome native species is common in wet parts of the Northwest. Members of the genus Delphinium are known as both delphinium and larkspur. Gardeners generally call the tall, perennial species delphinium and the smaller, annual species larkspur. Botanists usually call all species delphinium. Cattle ranchers, who despise the plants because of their toxicity to livestock, call all species larkspur.


From the Image Gallery

3 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb

Bloom Information

Bloom Time: Apr , May , Jun


Native Distribution: Southern Washington south to northern California.
Native Habitat: Moist shady woods and wet banks.

Find Seed or Plants

Find seed sources for this species at the Native Seed Network.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

Native Seed Network - Corvallis, OR

Additional resources

USDA: Find Delphinium trolliifolium in USDA Plants
FNA: Find Delphinium trolliifolium in the Flora of North America (if available)
Google: Search Google for Delphinium trolliifolium


Record Modified: 2007-01-01
Research By: TWC Staff

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