Maybe it could be used in a constructed wetland to catch nutrient-rich
runoff from food producing gardens or compost piles and concentrate and
store nitrogen for later harvest and conversion to nitrogen-rich compost
for garden application and soil fertility building; used in tandem with
leguminous cover crops.
I have heard that it is a host plant for important beneficial insects.
It is considered an invasive weed.
It is far less so that many other weeds (Bermuda grass
I am learning how to get rid of Bermuda in fallow fields by allowing
natural plant succession, plants emerging from the soil weed seed bank,
to outcompete it. In the field in question mustard, winter rye, fescue,
wild millet curly dock seem to be doing the job, also with eradicating
redroot pigweed in seedling stage during drought through shading and
competition for space and water above and below ground.
[permaculture] Use of Canada Thistle as a nitrogen catch crop,
Lawrence F. London, Jr., 05/06/2010