While the high firing temperature and quality of our glazed and terra cotta containers results in a durable and frost-resistant product, we still recommend that they be stored in a frost-free covered area in winter. If left outside, water may accumulate in the container and freeze, causing the planter to crack and break. Planters that must be left outside should be covered to prevent water, snow and ice from accumulating inside the planter. Our glazed and terra cotta pottery is high fired between 990 (terra cotta) and 1000 (glazed) degrees centigrade to ensure frost resistance and durability. Due to the processes used in the manufacturing of our hand-made and hand-glazed containers, all variations with respect to firing, color, size and crackling are natural occurrences in the manufacturing process. The glazes on our containers consist of natural, not chemical, components and therefore the final color of the product will vary. This process creates the unique beauty of each piece. Planter Features a drain hole