Nuttallanthus canadensis (L.) D.A. Sutton
Canada Toadflax, Blue Toadflax, Old-field Toadflax
Scrophulariaceae (Figwort Family)
Synonym(s): Linaria canadensis
USDA Symbol: NUCA
Blue-violet bilaterally symmetrical flowers blooming in a raceme on a slender, erect stem with short, prostrate branches at base.
Flowers: corolla about 1/2" (1.3 cm) long, with a slender spur about 1/4" (6 mm) long projecting backward and curving down
This plant, once in the genus Linaria, has recently been placed in Nuttallanthus. Texas Toadflax (N. texanus), similar but less common in the Southwest, has larger flowers and seeds. Nuttallanthus species are often components of wildflower seed mixes, and
From the Image Gallery
Bloom InformationBloom Color: Blue
Bloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep
DistributionUSA: AL , AR , CA , CT , DC , DE , FL , GA , IA , IL , IN , KS , LA , MA , MD , ME , MI , MN , MO , MS , NC , ND , NH , NJ , NY , OH , OK , OR , PA , RI , SC , SD , TN , TX , VA , VT , WA , WI , WV
Native Distribution: Southern Canada and throughout most of eastern United States west to Dakotas and Texas; in West, Washington south to California.
Native Habitat: Open, sandy areas where moist in spring.
Growing ConditionsLight Requirement: Sun
Soil Moisture: Moist
Soil Description: Loam, Sand
BibliographyBibref 1294 - The Midwestern Native Garden: Native Alternatives to Nonnative Flowers and Plants An Illustrated Guide (2011) Adelman, Charlotte and Schwartz, Bernard L.
Search More Titles in Bibliography
Additional resourcesUSDA: Find Nuttallanthus canadensis in USDA Plants
FNA: Find Nuttallanthus canadensis in the Flora of North America (if available)
Google: Search Google for Nuttallanthus canadensis
MetadataRecord Modified: 2018-09-24
Research By: TWC Staff