About Delphinium trolliifolium A.Gray
Taxonomy and Common Names
Delphinium trolliifolium A.Gray is a species of larkspur, commonly known as poison delphinium, cow poison, and Columbian larkspur.
Native Range
It is native to Washington, Oregon, and northern California.
Plant Height
This wildflower grows between 0.5 meters and just over 1 meter tall.
Leaf Characteristics
It produces large, shiny, deeply lobed leaves.
Inflorescence Structure
The upper half of the stem forms an inflorescence, holding widely spaced flowers on long pedicels; the longest pedicels measure over nine centimeters.
Flower Coloration
The flowers are most often a deep, brilliant blue, and the upper two petals may be milky white.
Flower Spur Length
On the largest flowers, the spur exceeds two centimeters in length.
Toxicity
As its common names suggest, this plant is toxic, especially to livestock. Most larkspur species are toxic to some degree.
