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Lake Region & Western Foothills Permaculture Message Board › Dealing with Japanese knotweed

Dealing with Japanese knotweed

Harold M.
user 9605086
Portland, ME
Post #: 4
Does anyone have experience successfully containing or eradicating this invasive? Ideas, web sites, and opinions wanted!
David H.
Group Organizer
Westbrook, ME
Post #: 513
I've done it the hard way with removing the root ball and then a heavy cardboard suppression. Its not 100% effective but it helps. I have also known of other people giving the knot weed an area to thrive while suppressing the areas you want to eradicate. The plants will send their energy in to growth in the "safe zone" and not in the suppressed zones.
Aaron P.
user 6845673
Falmouth, ME
Post #: 191
I have heard that Japanese Knotweed thrives in boron weak soils and that if you amend your soil with something containing boron (ie Borax) it makes it easier to suppress the knotweed and something else will have a better shot at out competing it.
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