Japanese knotweed for biochar and medicine

I forgot to mention.  Japanese knotweed should be a great one to make biochar out of.  My only caveat is to make sure that you aren't accidentally creating more of the plants.  It can root from a small piece of the plant.  I live in the PNWet, so I wouldn't do that in between October and April.  However, it tends to be very dry here from about May to September, so I would chop it then, collect every part of it, dry it out, and then yes, make biochar out of it.  Did you know that Japanese knotweed is the primary commercial source of resveratrol for the supplement industry? I 'm  almost 60, so I make medicine out of the plant as I"m killing it. Resveratrol is the medicine in red wine that helped create the French paradox-why are they so healthy if they eat goose liver and drink wine all day? I just put the chopped up orange roots into glycerin to make a glycerite-extract.  Improves my health and saves me money!

John S
PDX OR

This is actually the time of year when I harvest it, so it doesn't become invasive all over the place.
JOhn S
PDX OR