Yellow Toadflax

Yellow Toadflax

Linaria vulgaris P. Miller

Scrophulariaceae (Figwort Family)

new shoots from creeping roots in spring ▲

colony of flowering plants ▲

flowers ▲

Yellow Toadflax:

creeping perennial with creeping roots; grows 6-24" high on unbranched stems with 1-2" long linear leaves
flowers are yellow, snapdragon-like and quite showy
can form dense colonies rather quickly in fertile, well-drained soils
introduced as an ornamental, but invasive into pastures and rangelands and may be mildly poisonous to livestock
similar species, Dalmatian Toadflax grows larger, has larger flowers and more oval-pointed leaves (compared to more rounded-linear leaves of yellow toadflax)
leaves and colony formation of yellow toadflax may appear similar to Cypress Spurge, but cypress spurge has milky sap and lacks the showy snapdragon-like flowers