Weed identification guides
Since 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 managed.