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Invasive Species Resources

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University of Idaho Extension.
This pocket guide has color photographs of all the weeds on Idaho's official noxious weeds list. Inside find maps showing each weed's distribution by county, leaf shape illustrations to aid in identification, and features to help distinguish the weeds from similar-looking plants.
Bishop Museum. Hawaii Biological Survey; University of Hawaii.

University of Delaware Cooperative Extension.

Plants for a Livable Delaware is a campaign to identify and promote superior plants that thrive without becoming invasive. Visit the University of Delaware's Extension Program for more information on sustainable landscaping.
University of Idaho. Rangeland Ecology and Management.
Prepared by: American Sheep Industry Association
University of Hawaii. College of Tropical Agriculture and Human Resources.
See also: Weeds of Hawaii for more species guides