Salt Cedar
The Issue
Salt Cedar (Tamarix spp.) is an invasive species that was brought to the United States from Eurasia and Africa as an ornamental and an erosion control method for waterways. Unfortunately, Salt Cedar has grown out of control and has taken over the habitat of native species like cottonwood and willows. A salt cedar plant can consume up to 200 gallons of water per day from its deep root system. It also deposits salt on the soil surface, further impeding the ability of native plants to survive.
The above image shows a seasonal crew member cutting down salt cedar plants so they can be sprayed.
The above image shows a salt cedar branch with its scalelike leaves and smooth reddish bark
Management
The Sheridan County Weed and Pest District (SCWPD) treats salt cedar within our Special Management Program (SMP). SCWPD, in cooperation with many landowners, is currently working on the Upper Powder River area to battle the invasion. Work is typically performed from January to March, when the ground is frozen and desirable forages are dormant, in order to minimize any damage. The salt cedar plants are cut near the soil surface and treated with a herbicide that is absorbed through the plant's cambium layer. The herbicide damages the plant's root system, preventing it from re-growing the following spring.
Salt cedar is considered a substantial threat to Wyoming's ecosystem due to its ability to spread rapidly, consume vast quantities of water, and push out native species. Under the Special Management Program, SCWPD will cost-share with affected landowners to treat infestations.