Re: more invasive menaces (horsetails)

Cover with solid black plastic.  I saw a bank in Elk Rock, the Bishop's
Close in Portland, Oregon, that had been solid horsetails.  The black
plastic had eliminated it.

I tried a piece of landscape cloth over a patch in my daughter's
garden to see if horsetail would pierce it.  It didn't.  Landscape cloth
has the advantage that water can go through it, so if there are tree roots
underneath, they will get the water they need.  I don't know whether it
will kill the horsetail, though, as the experiment lasted only a few
months.
		Diane Whitehead, Victoria, BC, Canada


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