Deb Soule founded Avena Botanicals in an 8- by 10-foot room in her house with a small mail order catalog and a booth at the Common Ground Country Fair in 1985. Today, on 32 acres of farmland in Rockport, Avena encompasses a thriving apothecary supported by a 2-acre biodynamic herb garden and nectar producing flowers for pollinators. Soule is known as a gardener, herbalist, business leader and, above all, teacher. She will speak all three days of the Fair at noon on herbal topics in the Herb Tent.