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Nuttallanthus canadensis (Canada toadflax)
Smith, R.W.

Nuttallanthus canadensis

Nuttallanthus canadensis (L.) D.A. Sutton

Canada Toadflax, Blue Toadflax, Old-field Toadflax

Scrophulariaceae (Figwort Family)

Synonym(s): Linaria canadensis


USDA Native Status: L48 (N), CAN (N)

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

4 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Annual
Habit: Herb
Fruit Type: Capsule

Bloom Information

Bloom Color: Blue
Bloom Time: Mar , Apr , May , Jun , Jul , Aug , Sep


USA: 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 Conditions

Light Requirement: Sun
Soil Moisture: Moist
Soil Description: Loam, Sand

Additional resources

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


Record Modified: 2018-09-24
Research By: TWC Staff

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