Posted 4/16/2020 5:11 PM (GMT -5)
Let's see, from what I've heard Japanese knotweed grows just about anywhere. I have an enormous oregano plant, some dandelions, lamb's quarters, and violets (not sure how many of those are medicinal).
There's plenty of mimosa pudica plants for sale online—but they might not be the right variety. Some herbs like lomatium can't be farmed at all. What herbs were you looking to grow?
I think you can easily cultivate boneset and artemesia annua in places like the northeast. Some plants like neem are tropical, though.
Buhner recommends some bulk herb companies (1st Chinese Herbs and Plum Flower brand, I think) for people who want to buy in bulk. I bought a pound of houttuynia, but I never used it because it tastes terrible.