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Four common ornamentals now listed as noxious weeds |
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April 24, 2017 |
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| Chamaecytisus |
Cytisus |
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| Genista |
Spartium |
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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 three-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 Boundary
County Weed Superintendent Dave Wenk at
267-5341 or email
dwenk@boundarycountyid.org.
Remember, spread the word not the weed! |
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