herbalist

from WordNet (r) 3.0 (2006)

herbalist
    n 1: a therapist who heals by the use of herbs [syn:
         {herbalist}, {herb doctor}]

from The Collaborative International Dictionary of English v.0.48

Herbalist \Herb"al*ist\, n.
   One skilled in the knowledge of plants; a collector of, or
   dealer in, herbs, especially medicinal herbs.
   [1913 Webster]