Attachment_2_Contractor_Priority_Species_2026.pdf
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- Attached to
- GRTE INVASIVE PLANT BACKPACK TREATMENTS Federal contract opportunity
- Solicitation number
- 140P1426Q0068
About this file
This document is an Invasive Plant Priority Treatment List for 2026 that identifies plant species requiring management attention.
The Priority Treatment List designates 23 invasive plant species as high-priority targets for treatment and removal efforts. These priority species include 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 contains an additional 54 invasive plant species that require monitoring and evaluation for potential future treatment prioritization. These watch list species include African rue, Austrian fieldcress, baby's breath, bouncing bet, Brazilian elodea, chicory, common bugloss, common crupina, common reed, poison hemlock, purple loosestrife, Russian knapweed, Russian olive, Scotch broom, yellow starthistle, and numerous others. The dual-category approach allows for focused resource allocation on the most problematic invasive species while maintaining surveillance of emerging invasive threats within the management area.
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Invasive Plant Priority Treatment List 2026
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 Orange Hawkweed Common Tansy
Watch List
African rue Austrian fieldcress Baby's breath Bouncing bet Brazilian elodea Chicory Common bugloss Common crupina Common reed Common teasel Costmary Diffuse knapweed Elongated mustard Field Scabious Flowering rush Garlic mustard Goatsrue Iberian starthistle Knotweed complex Mediterranean sage Medusahead rye Moth mullein Plumeless thistle Poison hemlock Policeman's helmet Puncturevine Purple loosestrife Purple starthistle Quackgrass Russian knapweed Russian olive Scotch broom Scotch thistle Squarrose knapweed Summer pheasant’s-eye Tall buttercup Tansy ragwort Thesium Ventenata
Viper's Bugloss Yellow chamomile Yellow flag iris Yellow starthistle Absinth wormwood Birdsfoot Trefoil Black henbane Bull thistle Common burdock Common Tansy Cypress spurge Dames Rocket Dyers woad Hoary cress (whitetop) Kochia Leafy spurge Meadow Hawkweed (yellow) Myrtle spurge Orange Hawkweed Palmer Amaranth Perennial pepperweed Rush skeletonweed Russian Thistle Saltcedar
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