Twenty years later, I'm working in an herbal medicinary where we sell Ligusticum root in bulk form and tincture. And we can't find it anymore.
Somehow this last batch of Ligusticum was amazing. Maybe the plant always was. As we try to replace the herb with something different in various respiratory formulae, we learn how hard it is to replace. There are lots of great herbs but nothing has the same clearing pungency. It's a shame.
This last batch was also very expensive. Someone got top dollar for some minimally processed root, and here it is smelling like the best medicine anyone ever had. I just made a 4 ounce tea formula with only 24 grams of Osha in it and the tea cost over $70.
My message to herbalists is to say goodbye. Stop prescribing this wonderful plant, unless you can figure out a way to cultivate it. I believe you can still purchase the seeds from Strictly Medicinal. It's in the carrot family and lots of plants in that family are poisonous, so be careful!
Many of us use herbs. We use use use, and rarely say thank you or try to help the plants. Let us not be so selfish. Use what grows near you, learn to propagate it. Encourage it. Protect it. Help plants migrate to higher ground and cooler exposures if they need the cold. And be grateful, because these wonderful plants are a gift.