North Arizona Invasive Plants

  • Camelthorn

    Camelthorn

    Camelthorn (Alhagi maurorum), a resilient yet troublesome invasive plant species, has found its way into the arid landscapes of the southwestern United States. Originating from…

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  • Dalmatian Toadflax

    Dalmatian Toadflax

    Dalmatian Toadflax (Linaria dalmatica) is native to Southeastern Europe and Western Asia and has become an invasive species in North America.

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  • Diffuse Knapweed

    Diffuse Knapweed

    Diffuse Knapweed is considered a problem due to its aggressive growth, rapid spread, and ability to outcompete native vegetation.

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  • Fuller’s Teasel

    Fuller’s Teasel

    Fuller’s Teasel (Dipsacus fullonum), a striking and yet invasive plant species, has become a growing concern in the southwestern United States.

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  • Leafy Spurge

    Leafy Spurge

    Leafy Spurge (Euphorbia esula) is native to Europe and Asia and has become an invasive species in North America.

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  • Russian Knapweed

    Russian Knapweed

    Russian Knapweed is considered a problem due to its aggressive growth, rapid spread, and the ability to form dense stands, displacing native vegetation and impacting…

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  • Russian Olive

    Russian Olive

    Russian Olive is considered a problem due to its aggressive growth, rapid spread, and the ability to form dense stands, displacing native vegetation and altering…

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  • Scotch Thistle

    Scotch Thistle

    Scotch Thistle (Onopordum acanthium) is native to Eurasia and has become an invasive species in various parts of North America.

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  • Siberian Elm

    Siberian Elm

    Siberian Elm (Ulmus pumila) is native to Asia and has become an invasive species in various parts of North America.

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  • Spotted Knapweed

    Spotted Knapweed

    Spotted Knapweed (Centaurea stoebe) is native to Eurasia and has become an invasive species in North America.

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  • Yellow Bluestem

    Yellow Bluestem

    Yellow Bluestem is considered a problem due to its aggressive growth, rapid spread, and the ability to form dense stands, displacing native vegetation and impacting…

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  • Yellow Starthistle

    Yellow Starthistle

    Yellow Starthistle (Centaurea solstitialis) is native to the Mediterranean region and has become an invasive species in North America.

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