Invasive Plants, Pacific Northwest
Dalmatian Toadflax was first brought to the Pacific Northwest as an ornamental. Its snapdragon like beautiful yellow flowers make it a favorite among gardeners.
The plant is native to the Mediterranean region and was introduced to North America in the late 1800s. It appeared in southeast B. C. by 1940.
It is a serious problem for farms and grasslands on our coast. The small and light seeds of toadflax are easily spread by birds, animals and the wind, and germinate along roadsides, in farmers’ fields and in logged over or otherwise disturbed areas.
It is an attractive plant and is also found in many coastal gardens.
Dalmatian toadflax is an aggressive invader. Its fast growing with very strong horizontal roots. It flowers early and produces great numbers of seeds which give it an advantage over other species.
The plant forms dense thickets that push out native grasses and wildflowers, and reduce land used for cattle and wildlife grazing. Toadflax could be quite toxic to animals but wildlife and livestock generally will not eat it.