Harvest for the Hungry Garden has put out a call for volunteer gardeners. Its herb garden needs periodic tender, loving care and about two to four hours a month will do it.  Help is also needed in growing vegetables and propagating seedlings. The garden is at 1717 Yulupa Ave., Santa Rosa, behind Christ Church United Methodist and is open seven days a week from sunrise to sunset. Call Fawn at 575-1746. The Web site is www.harvestgarden.org.