Clay plant pot in terracotta ensures good water drainage in the pot, preventing freezing caused by waterlogging from cracking the container. The drainage hole should be unobstructed and can be covered with an upwardly curved piece of clay to allow for proper water flow. Place the pot on feet to prevent it from freezing to the ground and to allow water to drain freely in all directions. If possible, position the pot in a sheltered location away from precipitation and drafts to avoid saturation and the risk of damaging ice formation.