Outpost Natural Foods and Urban Ecology Center are sponsoring “Grow Local Milwaukee—Celebrate Urban Gardening!” from noon to 4 p.m. Sunday, May 15 at the center, 1500 E. Park Pl. in Riverside Park. Participating organizations include Eat Local Challenge/Eat Local Milwaukee, Farm Fresh Atlas of Southeastern Wisconsin, Gardens Not Garbage, Keep Greater Milwaukee Beautiful, Kellner’s Greenhouse, Milwaukee Urban Gardens, Victory Garden Initiative and Walnut Way Conservation Corp. A $5 donation is requested, but children under 12 are free. For more information, contact Nicole Lightwine, (414) 264-2326.