The Friends of the Page-Walker are offering garden enthusiasts the inspiration they need to get growing at the 11th Annual Herbfest. Guests can stroll through craft and herb booths, enjoy kid activities, bid on delicious treats at the Young Friends bake sale, see the butterfly release (12:30 pm), and take free trolley rides, available from 10 am to 12 pm, on a mini-tour of historic downtown Cary.