This list is a best estimate of noxious/invasive plants which will have a significant impact in Yavapai county in the future. This list does not include many invasive plants already known to be in the county due to 1) their populations exist most everywhere in the county; 2) their populations are very large at these locations; and/or 3) their presence may have a significant impact already. This list is a dynamic and can be revised at any time when new information becomes available.
For definitions of noxious and invasive weeds see the following:
National Invasive Species Council - http://invasivespeciesinfo.gov/cofo.gov/
Arizona Invasive Species Advisory Council - http://www.governor.state.az.us/AIS/
Arizona Department of Agriculture - http://www.azda.gov/PSD/quarantine5.htm
The following list is found near or in these communities: Black Canyon City, Mayer, Congress, Segliman, Camp Verde, Bagdad, Kirkland and the Tri-City area.
The Dirty Dozen
12 of the most noxious/invasive weeds found in Yavapai County , Arizona
according to the Yavapai Weed Management Area (YWMA)
Noxious weeds
Common name: Threat level: Comments:
Spotted knapweed High Aggressive perennial
Russian knapweed High Aggressive perennial
Scotch thistle High Biennial forb
Yellow starthistle Medium Very aggressive annual
Dalmatian toadflax High Snapdragon-like flower
Hoary cress Medium Also called “whitetop”
Invasive weeds
Common name: Threat level: Comments:
Cheatgrass Medium Annual weed
 |
| More details on Cheatgrass CLICK HERE |
Tree of Heaven High Large compound leaves
 |
| More details on Tree of Heaven CLICK HERE |
Giant reed Medium Can form dense stands
Russian olive Low Fast-growing tree
Salt cedar (aka Tamarisk) Medium Common along streams or lakes.
Siberian elm Medium Considered a poor ornamental
Salt cedar (aka Tamarisk) Medium Common along streams or lakes.
 |
| More details on Salt Cedar(Tamarisk) CLICK HERE |
 |
| More details on Siberian Elm CLICK HERE |
