Bloomipedia
Balkan toadflax (Linaria dalmatica)
Photo: Daughter Dad via iNaturalist · CC BY 4.0 · resized

Flower profile

Balkan toadflax

Linaria dalmatica

Introduced in the lower 48

Balkan toadflax is a wildflower that USDA PLANTS lists as introduced in the lower 48 states. It's on our flower lists for 4 states, and across the U.S. it's most often seen in bloom in May–October.

31states
4of our state lists
8,173U.S. sightings*

*iNaturalist research-grade observations, as of October 17, 2026.

On our lists for: Colorado, Montana, Utah, Wyoming

🚫
Regulated invasive plant in Colorado, Utah, Montana and Wyoming. It's on those states' official invasive plant lists (Colorado: List B noxious weed; Utah: Class 2 noxious weed (control); Montana: Priority 2B noxious weed; Wyoming: State designated noxious weed). Please don't plant or share it there. 8 CCR 1206-2 R68-9-3 ARM 4.5.206–210 WY designated noxious weeds

Quick look

Linaria dalmatica is a herbaceous, short-lived perennial plant in the family Plantaginaceae native to western Asia and southeastern Europe. As with related species, it was formerly included in the family Scrophulariaceae (figwort) family. Its common names include Balkan toadflax, broadleaf toadflax, and Dalmatian toadflax. The distribution of L.

  • It belongs to the Plantaginaceae family. iNaturalist
  • USDA PLANTS describes it as an herb (forb) with a perennial life cycle. USDA PLANTS
  • USDA PLANTS lists it as introduced in the lower 48 states and records it in 31 states. USDA PLANTS
  • NatureServe lists it as not native to Colorado, Utah, Montana and Wyoming. NatureServe
  • In Colorado, most iNaturalist sightings of it in flower come in May–October. iNaturalist
  • In Utah, most iNaturalist sightings of it in flower come in May–October. iNaturalist
  • iNaturalist has 3,576 research-grade sightings of it in Colorado, ranking #35 among the 110 flowers on our Colorado list. iNaturalist
  • iNaturalist has 1,004 research-grade sightings of it in Utah, ranking #53 among the 109 flowers on our Utah list. iNaturalist
  • iNaturalist has 448 research-grade sightings of it in Montana, ranking #101 among the 109 flowers on our Montana list. iNaturalist

State flower gift ideas

This one is a regulated invasive plant, so here are state flower gifts instead.

When does it bloom?

Flowering records by month across the U.S. (iNaturalist research-grade observations marked “Flowering”) (877 records)
Bloom time in each of our 4 states
StateTypePeak bloomSightings*
ColoradoIntroducedMay–October3,576
UtahIntroducedMay–October1,004
MontanaIntroducedMay–October448
WyomingIntroducedJune–September420

Conservation status

Federal (U.S. ESA)
Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
NatureServe global
G5 Secure worldwide. NatureServe
Colorado
No list Colorado has no state law listing endangered or threatened plants, so we show NatureServe's Colorado ranks instead. NatureServe: SNA, not applicable (usually because it isn't native there) in Colorado.
Utah
No list Utah has no state law listing endangered or threatened plants, so we show NatureServe's Utah ranks instead. NatureServe: SNA, not applicable (usually because it isn't native there) in Utah.
Montana
No list Montana has no state law listing endangered or threatened plants, so we show NatureServe's Montana ranks instead. NatureServe: SNA, not applicable (usually because it isn't native there) in Montana.
Wyoming
No list Wyoming has no state law listing endangered or threatened plants, so we show NatureServe's Wyoming ranks instead. NatureServe: SNA, not applicable (usually because it isn't native there) in Wyoming.
Rare elsewhere
No other U.S. state ranks it S1, S2, SH or SX.

Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.

Can you eat it?

For peopleNot well documented

None of the sources we checked (NC State Extension (no page for this plant), USDA PLANTS) say whether it's edible or poisonous for people.

For petsNot well documented

It isn't on the ASPCA plant list.

🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.

Where does it grow?

USDA PLANTS records balkan toadflax in 31 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

Arizona, California, Colorado, Connecticut, Idaho, Illinois, Indiana, Iowa, Kansas, Maine, Massachusetts, Michigan, Minnesota, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, South Dakota, Utah, Vermont, Washington, Wisconsin, Wyoming.

Colorado counties with USDA records: Baca, Boulder, Dolores, El Paso, Garfield, Jefferson, Larimer, Las Animas, Moffat, Montezuma, Pitkin, Routt, San Miguel, Washington.

Utah counties with USDA records: Beaver, Cache, Emery, Garfield, Grand, Rich, Salt Lake, San Juan, Summit, Uintah, Utah, Wasatch.

Montana counties with USDA records: Beaverhead, Big Horn, Blaine, Broadwater, Carbon, Cascade, Chouteau, Daniels, Dawson, Deer Lodge, Fergus, Flathead, Gallatin, Garfield, Glacier, Golden Valley, Granite, Hill, Jefferson, Judith Basin, Lake, Lewis and Clark, Liberty, Lincoln, Madison, Meagher, Mineral, Missoula, Musselshell, Park, Phillips, Pondera, Prairie, Ravalli, Richland, Roosevelt, Rosebud, Sanders, Sheridan, Silver Bow, Stillwater, Sweet Grass, Teton, Toole, Valley, Wibaux, Yellowstone.

More Colorado flowers

Sources