Bruce Kelpsas and Chal Landgren
March 2021

Undesirable woody and herbaceous plants are problems in managed forests and on fence lines and rights-of-way. Safe, dependable methods of chemical weed control have been developed for most forestry needs. Reforestation, in particular, may depend heavily on weed control. Depending on local conditions and weed composition, the results sought differ strikingly in degree of control and composition of residual vegetation and, hence, in the choice of method. The Oregon Forest Practices Act mandates successful reforestation after logging, even in riparian areas. It also prescribes certain rules regarding herbicide use to protect plantations, forest resources, and water. Operators should be familiar with their state rules and labels whenever herbicides are used. A variety of chemicals are used to control forest weeds. Any product used in various forestry applications must be EPA-registered for that use. Products not carrying a forest, reforestation, forest management, conifer plantation, or similar use on their labels must not be used in the forest, even if they have active ingredients that are registered on other products for forest use.