Toadflax (Linaria vulgaris)

Toadflax description

Toadflax plants may grow up to 3 feet tall.

Propagation

Toadflax is a perennial that spreads via rhizomes.

Similar species

Toadflax, at an early stage, resembles leafy spurge. Leafy spurge can be differentiated by the milky sap in its' stems. Toadflax does not have the milky sap.

Distribution

Toadflax is found throughout the country.

Identifying Toadflax

Seedling

Cotyledons ovate to lanceolate, with a distict bump at the tips. First true leaves opposite of alternate, ovate, hairless.

Mature plant

Erect, few branches in upper parts, often several stems in a clump, 8 to 30 inches tall at maturity. Smooth and hairless.



Leaves alternate, although they can be crowded and appear opposite or whorled. Linear, 3/4 to 3 inches long, smooth edges, yellow-green, hairless, without stalks.

Root structure description

Deep, horizontal, creeping roots.