[RWebb]

they are all considered pesticides -- at least by some...

I use tiny drops of Roundup - which is relatively benign (of course, you never know...) BUT I don't see why in the world you risk having the province come down on your ass after your neighbors report you -- and don't you think they will??

I suggest getting together with your neighbors and maybe asking for the province or city, etc. to have a consultant/exert offer advice at the meeting.

Many many "weeds" are annuals. If you all mow and pull out tyhe weeds BEFORE they set seed then they cannot propagate (that year). The next year there will be some seeds that from 2 years ago and further that survived in the soil (the soil bank). Get them too. The 3rd year there will be fewer & fewer to deal with.

There are lots of such clever and organic things you can do, but everybody within dispersal distance for the seeds has to do it.