In colder months, terracotta pots can crack due to freezing and thawing. To prevent this, avoid leaving them outside in freezing temperatures. It's best to move them indoors or to a sheltered area.

Cracked clay pots can be repaired by filling in the cracks, sanding down rough edges, and sealing it with spray paint. Rotting terracotta pots can be salvaged by removing the decayed areas ...

Put a layer of broken terracotta pot or even chunks ... where frozen water can expand and cause the container to crack. Standing the container on pot feet or even bricks will also help it to ...