Definitely best to harvest it yourself, prepare it yourself, if you are going to take it.
But when you can't would be nice to be able to get something of decent quality somewhere else.
I take stinging nettle root (for BPH - prostate issue) and get that from...
www.swansonvitamins.com
And it sure does help with my symptoms so I know it has some decent quality / quantity of root in it.
Think I will try and harvest some myself this year and make my own though. I am sure that would help even more.
You can't hardly trust anyone now days.
TNhunter