Invasive butter-and-eggs plant spotted along Wisconsin roadside
iNaturalist: speeser
Invasive Species
This cheerful yellow flower spreads aggressively through underground roots and can crowd out native prairie plants in the pastures and roadsides around your home.
Someone out for a walk in Adams, Wisconsin snapped a photo of common toadflax, a snapdragon relative with bright yellow and orange flowers that's also called butter and eggs. Other naturalists confirmed the identification, making it a verified 'research-grade' record. It's originally from Europe and Asia but has spread widely across North America, often popping up in disturbed soil along roads and fields.
Key Findings
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Observation location: Eighth Ave, Adams, Wisconsin, US
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Identification confirmed as research-grade by the iNaturalist community
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Species is a non-native perennial known to spread via rhizomes and seed
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Technical Summary
A community scientist confirmed a sighting of common toadflax, a yellow-flowered plant often called 'butter and eggs,' growing along a roadside in Adams, Wisconsin.
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Abstract Preview
Original paper
common toadflax (Linaria vulgaris) observed in Eighth Ave, Adams, WI, US
Research-grade observation of common toadflax in Eighth Ave, Adams, WI, US.
Linaria vulgaris, the common toadflax, is a species of flowering plant in the family Plantaginaceae, native to Europe, and northern, central and eastern Asia. It has also been introduced to North America and is now common there.
