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ScrappleJac t1_je0o119 wrote

Are you looking for dried stalks? I don't think you'd get the removal benefit unless you were processing the roots. Harvesting dried stalks at the end of the season may actually promote knotweed stand growth since they like growing under full sun.


amoebashephard OP t1_je0pa64 wrote

I'd be looking at buying during two parts of the season- spring/early summer and then before fall;

Initial cutting would get a higher price with squash planting, and I would handle drying/processing in order to get the right moisture content.

Edit: removal at certain points depletes the rhizome and allows for better suppression