Northern AZ

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 ecosystems.

Native to Eurasia and North Africa, this tenacious shrub thrives in harsh conditions, demonstrating remarkable resilience while posing significant ecological challenges.

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

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

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

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

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 ecosystems.

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 ecosystems.

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