Attachment_2_Contractor_Priority_Species_2026.pdf

This document is an Invasive Plant Priority Treatment List for 2026 that categorizes invasive plant species into two management categories: a Priority Treatment List and a Watch List.

The Priority Treatment List identifies 23 species requiring immediate treatment and management efforts, including cheatgrass, common St. Johnswort, Dalmatian toadflax, field bindweed, hoary alyssum, oxeye daisy, scentless chamomile, silver cinquefoil, spotted knapweed, sulfur cinquefoil, white campion, yellow toadflax, Canada thistle, common mullein, houndstongue, musk thistle, yellow sweetclover, kochia, black henbane, bull thistle, leafy spurge, meadow hawkweed, and orange hawkweed. The Watch List comprises 53 species designated for monitoring and surveillance, including African rue, Austrian fieldcress, baby's breath, bouncing bet, Brazilian elodea, chicory, common bugloss, common crupina, common reed, poison hemlock, purple loosestrife, Russian olive, Scotch broom, yellow flag iris, yellow starthistle, and numerous others. The document serves as a planning and prioritization tool for invasive species management activities, with the Priority Treatment List representing species of greatest concern requiring focused control and eradication efforts, while the Watch List identifies emerging threats and species requiring preventive monitoring to limit their spread and establishment.