Does anyone know whether placing a plant--in a glazed ceramic pot--on the radiator will harm the pot in any way? I know the plant, a French lavender I brought inside for the winter, will enjoy the extra heat, but I'm concerned the glaze could be affected or even that the pot might crack. The rad is pleasantly warm at the moment, but it can get fairly hot. The plant really gets the best sun on there, though. Any advice you guys can share would be most appreciated!