How to Make Painted Terracotta Pots: Watermelon Painted ...
Is use 1 cup of white vinegar for every 3 to 4 cups of warm water. Check the clay pots at around 30 minutes. If the rest of the dirt scrubs off easily, remove the planters from the water. Otherwise, soak the terracotta pots for additional time. Now wash and rinse the planters using warm, soapy water.