Steps on How to Age a Terracotta Pot
1. Stir the Mixture
In a bowl, mix garden lime and water together in a 50–50 ratio, and stir until you get a paste. You should be able to easily apply this with a foam brush; if the mixture is too thick, add water as needed.
2. Apply the Solution
Brush the solution onto the terra-cotta pot so that it’s completely covered with a thick layer. Add a second layer if needed.
3. Sand the Pot
Once dry, use sandpaper to smooth out any grit left on the pot. Sand some spots more aggressively for an uneven, natural look.
Tip: Since you’ll be sealing the pot with a spray that will remove some of the lime, leave more than you’d like to see in the final result.
4. Seal the Surface
Don a protective face mask and gloves, and spray the pot with the matte sealer, letting it dry to the touch between coats. Use quick, light passes and aim for three to four layers.
5. Finish Sealing
Seal the inside and bottom of the pot too, to keep it from absorbing moisture when you water your plant.