Washington State Noxious Weed Control Board Monitor List
Many noxious weeds are, in fact, escaped garden plants. Some escaped plants are temporary wanderers outside our care and nurturing, some only occupy niches where nothing else wants to grow. Some, however, become ecological bullies, crowd out native plants, poison livestock, and damage local ecosystems.
Qualities of Common Ornamental Plants
Characteristics of Noxious Weeds
Have you seen any of these plants on a roadside, hillside, by a river or stream? Have you seen them in a ditch or forested area? Chances are pretty good that they have escaped cultivation.We are currently monitoring for these species.
|Arundo donax, also known as “Giant Reed”, is a tall, erect perennial grass. It can look a lot like a rather leafy bamboo, and grows to heights of 20-30 feet when established. It may have green or variegated leaves. Arundo spreads by underground rhizomes, forming dense stands. Where it has escaped cultivation (California and much of the southern United States), Arundo has developed large, difficult to control infestations, and is a very serious fire hazard.|
|Garlic Mustard, one of the
fastest spreading invaders in woodland habitats of North
America. Up to 3 feet tall with triangular to kidney shaped
leaves and small white flowers clustered at tops of stems. Roots
and new leaves smell like garlic in the spring.
Oregon Public Broadcasting Television Presentation:Invasive Species Rapid Response
Please remember to report
plants in locations where they wouldn't have been
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