Lomatium triternatum (Nineleaf biscuitroot)

Large, somewhat drought tolerant native perennial with long linear leaf segments and inconspicuous yellow flowers, blooming early April to August. Found on rocky and sandy soils in foothills, shrublands and woodland openings up to 12,000 ft. elevation. Crucial early spring forage and pollen for ungulates and pollinators. Foliage and associated insects are vital early spring food for sage-grouse hens and chicks. Biscuitroots are host plants for the Anise swallowtail butterfly and the rare Indra swallowtail butterfly.

DISTRIBUTION / ADAPTATION

Lomatium triternatum (Ninleaf biscuitroot) map.png

INFORMATION & ATTRIBUTES

Family: Apiaceae

Duration: Perennial

Growth Habit: Forb/herb

Native Status: Native

Growth Form: Single stem

Mature Height: 15 ft.

Bloom Color: Yellow to purple

Bloom Period: Early summer

Annual Precipitation: 14-30 in.

Drought Tolerance: High

Shade Tolerance: Intermediate

Elevation:

Wetland Indicator Status

Fire Resistance: Yes

Fire Tolerance: High

Nitrogen Fixation:

SOIL ADAPTATION

Coarse Texture: Yes

Medium Texture: Yes

Fine Texture: Yes

Salinity Tolerance: None

CaCO3 Tolerance: High

pH Range: 6.5-7.5


SEEDING NOTES

Seeds per Pound: 45,000

Seeding Rate: 5-10 PLS lbs/acre

Season: Spring/Fall

Days to Germination:


VARIETIES & LOCAL ACCESSIONS

None


ADDITIONAL LINKS

USDA PLANTS Profile

USDA PLANTS Plant Guide

Wildflowers of the Pacific Northwest

Burke Museum of Natural History and Culture

Consortium of Pacific Northwest Herbaria