Information on weed identification and control, including catsear, marestail, purple loosestrife, pokeweed, pigweed, poison ivy, crabgrass, hemlock, purslane and multiflora rose. Tips on various herbicides and integrated pest management.
By Dwight Lingenfelter, William S. Curran, Ph.D.
How late can an herbicide application be made in the fall and still be effective? We provide comments about controlling perennials and winter annual weeds.
Pokeweed can be a weed in landscape beds and nurseries.
Bull thistle (Cirsium vulgare) is a biennial that true to its name, has notable spines. This plant is much different than Canada thistle.
Poison-ivy (Toxicodendron radicans) is a native woody, perennial vine.
Recently, some folks pulled into the local nursery, asking about the pretty pink flowering plants that were blooming along the fields and roadsides.
By Emelie Swackhamer, J. Robert Nuss, Larry Kuhns, Gregory Hoover
Inspecting your plants on a regular basis is essential to identifying and evaluating plant problems in their early stages.
By Emelie Swackhamer, Gregory Hoover
The best way to make an effective pesticide application is to observe pest development at the site through regular monitoring.