| A plastic pot does most of it's evaporation from the top, anyway. If one is an underwaterer, or if one is growing moisture loving plants, one usually grows in plastic pots to retain as much moisture as possible. Adding a clay pot to the outside can keep a topheavy plant from tipping over, or can just make a plant more attractive for keeping indoors while in bloom.
Personlly, I like clay, when I grow potted, but then I am definitely not an underwaterer.
-Cj |