I have a lot, too much Japanese knotwood growing on a huge bank that I need to get rid of forever, cheaply. Does someone have any ideas how I can do this successfully?
By boxtter from Bainbridge, OH
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Hardiness Zone: 5a
Beth from Western MA
I have had luck removing unwanted plants without poisons, by covering the area with old carpet or heavy fabric and covering that with mulch and rocks to look nice. It is called "solarizing" and it also kills any pathogens, germs, etc. I keep it on a full season.
Have you tried spraying it with Roundup? That's supposed to kill anything. (04/28/2007)
I'd check with a local horticulturalist. Your extension agent might have info. You have to be impressed with a plant that resilient, especially that far north. Maybe there's some research being done on it. (04/28/2007)