Scientific Name
Linaria dalmatica (L.) Mill. (ITIS)
Common Name
Dalmatian toadflax, broadleaf toadflax
Synonym
Linaria genistifolia ssp. dalmatica (L.) Maire & Petitm. (Vujnovic and Wein 1997)
Native To
Mediterranean Region (Vujnovic and Wein 1997)
Date of U.S. Introduction
Late 1800s or early 1900s (Vujnovic and Wein 1997)
Means of Introduction
Cultivated as an ornamental, for use in fabric dye, and for medicinal purposes (Sing et al. 2016)
Impact
Crowds out native species (Sing et al. 2016)
Spotlights
Mitigating the Growth of Toadflax: A CABI Interview
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Oct 5, 2021
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CAB International. Invasives Blog.
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Native to Europe, Yellow toadflax and Dalmatian toadflax can typically be found on roadsides, grasslands and in crop fields. Like many other weeds, toadflaxes have been introduced to North America as decorative plants but they are now having adverse effects. Whilst these weeds may look pretty and provide decorative appeal, they soon escape cultivation and can cause some serious problems. As part of a new CABI Podcast series, CABI experts Dr Hariet Hinz and Dr Ivan Toševski were interviewed from CABI in Switzerland, who explained to us what measures they are taking to control the spread of toadflax.
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Distribution / Maps / Survey Status
Early Detection & Distribution Mapping System (EDDMapS) - Dalmatian Toadflax
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University of Georgia. Center for Invasive Species and Ecosystem Health.
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Provides state, county, point and GIS data. Maps can be downloaded and shared.
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Videos
YouTube - Dalmatian Toadflax
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Google. YouTube; Montana Weed Control Association.
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All Resources
View and Filter All Dalmatian Toadflax Resources
Selected Resources
The section below contains highly relevant resources for this species, organized by source.
Council or Task Force
Fact Sheet: Dalmatian Toadflax [PDF, 462 KB]
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Jan 2014
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Alberta Invasive Species Council (Canada).
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See also: Fact Sheets for more information about individual invasive species, including those listed as "Prohibited Noxious" and "Noxious" under the Alberta Weed Control Act
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Partnership
Alaska Exotic Plants Information Clearinghouse (AKEPIC): Species Biography - Dalmatian Toadflax [PDF, 455 KB]
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Mar 19, 2012
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University of Alaska - Anchorage. Alaska Center for Conservation Science.
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See also: Non-Native Plant Species List for additional factsheets (species biographies) and species risk assessment reports of non-native species present in Alaska and also non-native species currently not recorded in Alaska (potential invasives)
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Invasive Plant Atlas of the United States - Dalmatian Toadflax
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University of Georgia. Center for Invasive Species and Ecosystem Health.
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Federal Government
Biology and Biological Control of Dalmatian and Yellow Toadflax, 3rd Edition
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Jul 2016
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USDA. FS. Forest Health Technology Enterprise Team.
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Invasive Species Technical Note - Ecology and Management of Dalmatian Toadflax [PDF, 549 KB]
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Jul 2006
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USDA. Natural Resources Conservation Service.
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See also: Plant Materials Technical Documents for more species
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Fire Effects Information System (FEIS) - Linaria spp.
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USDA. FS. Rocky Mountain Research Station. Fire Sciences Laboratory.
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PLANTS Database - Dalmatian Toadflax
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USDA. NRCS. National Plant Data Center.
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U.S. National Plant Germplasm System - Linaria dalmatica
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USDA. ARS. National Genetic Resources Program. GRIN-Global.
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State and Local Government
Thurston County Noxious Weed Fact Sheet: Dalmatian Toadflax [PDF, 356 KB]
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Feb 2017
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Thurston County Noxious Weed Program (Washington).
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See also: Noxious Weeds List for more species
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Class B Noxious Weed: Dalmatian Toadflax
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Washington State Noxious Weed Control Board.
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Dalmatian and Yellow Toadflax [PDF, 220 KB]
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City and County of Butte-Silver Bow (Montana).
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Dalmatian Toadflax: Options for Control [PDF, 366 KB]
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Lincoln County Noxious Weed Control Board (Washington).
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See also: Weed I.D. and Options for Control for more species
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Encycloweedia: Data Sheet - Linaria genus
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California Department of Food and Agriculture.
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See also: Included on California's noxious weed list; see Encycloweedia: Program Details for additional resources
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King County (Washington) Noxious Weed Control Program - Dalmatian Toadflax
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King County Department of Natural Resources (Washington). Water and Land Resources Division.
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Minnesota Noxious Weeds - Dalmatian Toadflax
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Minnesota Department of Agriculture.
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Noxious Weed Species ID - Dalmatian Toadflax
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Colorado Department of Agriculture. Conservation Services Division. Noxious Weed Program.
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Academic
Weed Control in Natural Areas in the Western United States: Dalmatian Toadflax [PDF, 250 KB]
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2013
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University of California. Weed Research and Information Center.
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See also: Weeds in Natural Areas for more information sheets
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Invasive Species Management in South Dakota - Yellow and Dalmatian Toadflax [PDF, 457 KB]
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Feb 2007
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South Dakota State University.
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See also: Extension Fact Sheets for more species.
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Natural Resources Series: Range - Biology and Management of the Toadflaxes
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Colorado State University Extension.
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Weed Information - Dalmatian Toadflax
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New Mexico State University.
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Professional
Noxious Weed Information - Dalmatian Toadflax
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Colorado Weed Management Association.
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Weed Identification - Dalmatian Toadflax
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Montana Weed Control Association.
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Citations
Integrated Taxonomic Information System. Linaria dalmatica. [Accessed Aug 27, 2023].
Vujnovic, K. and R.W. Wein. 1997. The biology of Canadian weeds. 106. Linaria dalmatica (L.) Mill. Canadian Journal of Plant Science 77(3):483-491.
Sing, S.E., R. De Clerck-Floate, R.W. Hansen, H. Pearce, C.B. Randall, I. Toševski, and S.M. Ward. 2016. Biology and biological control of Dalmatian and yellow toadflax. FHTET-2016-01 (3rd Edition) Morgantown, West Virginia: U.S. Forest Service Forest Health Technology Enterprise Team.
