Dalmatian toadflax is a perennial forb introduced from
Europe as an ornamental plant for use in gardens. It has escaped the
garden and is now rapidly invading dry rangeland from 5,000 to 8,000
feet in elevation. Dalmatian toadflax spreads by rhizomes and it should
be immediately controlled if encountered.
Leaves of Dalmatian toadflax are waxy, heart-shaped, and clasp the stem.
The stems are from 2 to 4 feet tall. The flowers are bright yellow with
an orange throat (snapdragon-like appearance). Fruits are a 2-celled
capsule containing hundreds of small seeds.
Dalmatian toadflax is well adapted to arid sites and can spread rapidly
once established. In Adams County, Dalmatian toadflax occurs along the
South Platte River and in the eastern half of the County near Leader