Terracotta flower pots often develop a white, powdery deposit on the exterior. This saltpeter buildup occurs when moisture rises through porous, medium-quality clay.
Searching for a natural fix? White vinegar effectively dissolves and removes these spots.

1. Select a sponge with an abrasive side.
2. Soak the abrasive side in white vinegar.
3. Rub the stained areas vigorously.
4. Rinse with a clean, damp sponge.
5. Repeat weekly.

Your pots are now spot-free! Weekly repetition eliminates the issue permanently and works on all terracotta, regardless of quality.
Have you used this trick to clean white stains from clay pots? Share your experience in the comments—we'd love to hear!