cooling - porous - alkaline - improves metabolism - sustainable
Clay is a completely natural product and is porous in nature. It is almost impossible to over-water the plants that you store in it. It is a lot easier to over-water plants when using plastic containers and as a result they die. This is why good gardeners always use terracotta pots.
Another great advantage of terracotta pots is the fact that the clay they are made from usually protects the roots of the plants. This is important in the summer when roots need air to breath and stay healthy. It is equally important in the winter too when frost can damage plants and crack pots. Terracotta can withstand extreme temperatures however which is one less worry for you and your plants in unpredictable weather conditions.