Description:
Dalmatian toadflax is an erect, short-lived, perennial herb, 0.8 to 1.5 m tall. The plant is hairless and glaucous, growing from a woody, branching base. The light green, waxy, alternate leaves are heart-shaped and clasp the stem. The flowers are bright yellow, tinged with orange, and resemble snapdragon flowers. The petals have two lips; the upper lip is two-lobed while the lower one is three-lobed. Individual flowers are nearly sessile, occurring in long, terminal racemes (USDA-ARS 1971; Morishita 1991).

• Mechanical: Intensive clean cultivation can effectively control Dalmatian toadflax. A successful approach includes at least a two year effort, with eight to ten cultivations in the first year and four to five cultivations in the second year (Morishita 1991; Butler and Burrill 1994).
• Biological: Calophasia lunula, a defoliating moth, is well-established in Washington and reportedly provides good control (William et al. 1996).
• Herbicide: icloram, picloram + 2,4-D, and dicamba all provide effective control, although repeated applications of dicamba may be necessary to achieve complete control (Ferrell and Whitson 1988; William et al. 1996). Refer to the State Noxious Weed Control Board site

For More Information:
Detailed information about Dalmatian Toadflax is available at the Washington State Noxious Weed Control Board Web Site.