Aster-family allergy. Not a months-long daily tonic. Skip if you have a known autoimmune disease and no one to ask.

Part used

Flowering tops; some people use 3-year roots in the fall

Gather

Garden perennial. Does not grow wild on every Dillsboro ridge — plant it.

Tincture

Fresh tops 1:2, or dry root 1:5, 4–6 weeks. Take at the first scratch, a few days, then stop.