Gardening workshop at EARTH center March 29 Middlesex County's Rutgers Cooperative Extension will host two garden workshops March 29 at the EARTH Center, Davidson's Mill Pond Park, 42 Riva Ave., South Brunswick. Class sizes are limited. A backyard composting workshop will be from 10 a.m. to noon. Attendees will learn how to create a nutritious soil supplement. Admission is free with registration. E-mail carole.tolmachewich@co.middlesex. nj.us or call (732) 745-4170. The "Earthwise Lawncare" workshop will begin at 1:30 p.m., and attendees will learn tricks to rejuvenate lawns using fewer chemicals. The cost is $25. To register, call (732) 398-5262.