02-ENF TNF Invasive Plant List.docx

Eldorado and Tahoe National Forests Invasive Plants of Management Concern

I. Group 1, Group 2, and Potential Invasive Weeds Weeds in Group 1, Group 2, and noxious weeds listed by the California Department of Food and Agriculture (CDFA) that have the potential to occur on either or both Eldorado or Tahoe National Forests should be mapped and controlled whenever they are seen within survey areas.

Group 1 (Eradicate): Highly invasive species known to occur on the Eldorado and/or Tahoe National Forests. Species are uncommon and are a priority for inventory, control, and eradication.

Group 2 (Control): Established or widespread species known to occur on the Eldorado and/or Tahoe National Forests. Inventory all infestations. Annually treat a portion of known infestations, focusing first on eradicating/containing isolated outlying infestations and, over time, reducing the footprint of larger, less isolated infestations.

Potential invasives: Species not yet found on the Eldorado and/or Tahoe National Forests. If found, infestations should be inventoried and targeted for eradication or control.

* Tribulus terrestris is listed as a Group 3 weed on the Eldorado National Forest

II. Group 3 Weeds Weeds in Group 3 should only be mapped and controlled when they are found as an isolated, leading edge of an infestation, or if they are found in sensitive plant habitat. These weeds are widespread and will not be mapped in the vast majority of survey areas.

Group 3 (Control): Established or widespread species known to occur on the Eldorado and Tahoe National Forests. Inventory and treat isolated leading-edge infestations or where concurrent with higher priority infestations.