IdahoHerbalist wrote: Patrick, I did some digging in Moore’s book and he makes the following suggestions:
Chickory: harvest either before or just as flowering begins in the Spring or Early Summer. I would imagine harvested at any time for the hot drink substitute would be appropriate.
Yellow Dock: harvest as LATE in the year as you can for best results. I am guessing that that is so the leaves can give all their goodness to the root.
Got this from the web page http://theherbarium.wordpress.com/20…c-tinctures-4/
Teasel: Being a biennial, the roots of the common Teasel are harvested in late summer of the second year before die back starts.
Of course this would be for BEST performance.
Hope that helps.
I got the chicory just to make the pseudo-postum. My kidneys don’t care if it’s medicinal.
The other two will be fine for medicine. I could have waited a few more weeks on the yellow dock but most of the green was dead or dying and the roots were good and yellow.
As a rule roots are best dug in the fall as you say. I wanted to show folks what they looked like too. 
The teasel should be fine per Moore. Some say it’s the first year root you should get. These roots were nice and juicy so I think they’ll be good medicine.
Patrick
Don't use herbs or combine herbs with medications or use them during lactation or pregnancy without talking with your healthcare provider.