Noxious Weeds: Scotch Broom now included on state list

As of the close of the 2017 Idaho Legislature Session, four genera of plants are now included on the Idaho Noxious Weed List as “prohibited genera”; Cytisus, Chamaecytisus, Genista, and Spartium.

These genera include but not limited to Scotch broom, Spanish broom, French broom, Portuguese broom, Moonlight broom, Cape broom, Weavers broom, and all related hybrids/cultivars.

These broom species are commonly used as landscape ornamentals and have been planted for many years. These species are very invasive and are a major issue in western Washington, Oregon, and California.

Bonner County has several infestations that the Selkirk Cooperative Weed Management Association (SCWMA) has been treating for several years.

Scotch broom and related species are woody shrubs that can grow up to 10 feet tall with many erect branches.

Stems are dark green and angled. Leaves are typically 3-parted with entire leaflets. Flowers are showy, yellow and abundant.

Seed pods are flattened, brown or black, with hairs on the margins.

Seeds may survive for many years (40-50) in the soil.

If you think you have seen any of these plants in Boundary County please contact Dave Wenk, Boundary County Weed Superintendent at 267-5341 or dwenk@boundarycountyid.org.

Remember, spread the word not the weed!