Terracotta pots (Frenchay BS16)

Three terracotta pots that were bought in Rome about 30 years ago. Two large 31cms high, and one small 26cms high. They are not, repeat not, frost-proof. They must be protected from frost. Either take them indoors during the winter or cover them over properly to protect them. They have only ever had clean commercial compost in them and zonal pelargoniums. They have a raised floral pattern on them.