The City of Milton, Upper Chattahoochee Riverkeepers and Milton Grows Green is sponsoring a rain barrel workshop from 6 to 7 p.m. May 11 at Scottsdale Farms, 15639 Birmingham Highway. The workshop provides participants to make and take home their own rain barrel. The device is easily installed on a home downspout and can conserve hundreds of gallons of water per month. Cost is $45.  Reservations and information: cindy.eade@cityofmiltonga.us or calling 678-242-2509.