Linaria vulgaris

Linaria vulgaris_yellow toadflax_ JM Di Tomaso
Photo: Joseph DiTomaso

Common names: yellow toadflax; butter and eggs; common linaria; common toadflax; wild snapdragon

Linaria vulgaris (yellow toadflax, butter and eggs) is an herbaceous perennial (family Plantaginaceae) that was introduced as an ornamental. It can be found in disturbed open sites, fields, pastures, degraded rangelands, roadsides, agronomic and perennial crops. Although it is typically found in northern California, it can occur sporadically in many other areas of California, except desert areas and the Big Basin. Infestations often form large colonies, displacing desirable vegetation.

Cal-IPC Rating: Moderate?

CDFA Rating: None?


Plant Assessment Form - Information gathered by Cal-IPC on the impacts, rate of spread, and distribution of invasive plants in California. Does not include management information.

Species ID Card

Invasive Species ID Card - To support field identification of early detection species, Cal-IPC has designed a set of Species ID cards that can be downloaded, printed double-sided, and trimmed to size.

Weed Management Notes

  • Management Notes - Information on management techniques and effectiveness from the University of California Cooperative Extension’s Weed Research & Information Center.

Cal-IPC Newsletter Articles

Cal-IPC Symposium Presentations

Presentations are linked where available. Where a presentation is not available, find more information by reading the abstract in the Cal-IPC Symposia Archive.

Other Linaria vulgaris Information

  • Bugwood - National database from the Center for Invasive Species and Ecosystem Health at the University of Georgia.
  • CalPhotos - Images of plants taken mostly in California.
  • Calflora - Distribution map and records of this species in California.
  • CalWeedMapper - Distribution map of this species in California with ability to determine regional priorities.
  • EDDMapS - Distribution of this species in North America.
  • Jepson Interchange - Information on this plant's taxonomy, biology, and distribution from UC Berkeley's Jepson Herbarium.
  • USDA PLANTS Database - Information on identification and distribution, with links to websites in individual states.
  • Additional photos

    Linaria vulgaris_yellow toadflax_Bob Case_cropped
    Linaria vulgaris (yellow toadflax) flower. Photo: Bob Case
    Linaria vulgaris_infestation_copyright_2009_Neal_Kramer
    Linaria vulgaris (yellow toadflax) infestation. Photo: &#169 2009 Neal Kramer