problem weeds tend to vary from one region to another it is
usually best to select reference books that cover your home
region as closely as possible. Also, check with local resources
such as Cooperative Extension for bulletins about particularly
noxious weeds in your immediate area. In the US and Canada the
following guides are suggested (right). Benefits of native weeds
Believe it or not weeds can be a beneficial part of your garden
so should not always be eliminated. Weeds often support
important natural enemy populations such as predatory insects
and mites. In a sense they serve as "nurseries" for these
beneficial groups. If you leave some weedy natural areas in your
landscape they will pay you back with free pest control. Even a
small area of weedy, native vegetation will serve this purpose.
Highly invasive, non-native weeds, however, should always be