DIY Projects & Crafts Aging Terra-Cotta Clay pots gradually whiten with age, showing evidence of minerals leaching from water through the years. Here's how to get that charming, weathered look without waiting. By Martha Stewart Editors Martha Stewart Editors Facebook Instagram Twitter Website An article attributed to "Martha Stewart Editors" indicates when several writers and editors have contributed to an article over the years. These collaborations allow us to provide you with the most accurate, up-to-date, and comprehensive information available.The Martha Stewart team aims to teach and inspire readers daily with tested-until-perfected recipes, creative DIY projects, and elevated home and entertaining ideas. They are experts in their fields who research, create, and test the best ways to help readers design the life they want. The joy is in the doing. Editorial Guidelines Updated on September 20, 2018 Share Tweet Pin Email What You'll Need Materials Lime powder Bristle brush Terra-cotta pot Medium-grit sandpaper (about 150 grit) Instructions Stir 1 cup of lime powder, a mineral available at garden centers, into 2 cups of water until it takes on a thick, gravy-like consistency. With a bristle brush, paint the solution onto pots, sparingly in some places and generously in others. When the pot is completely coated and still wet, spray some spots with water from a spray bottle on the "stream" setting to let some of the lime solution run off. Allow the pot to dry, then sand in a random pattern with medium-grit sandpaper (about 150 grit) until you are satisfied with the gently mottled surface.