over the past 10 years or so i seem to pick up 2-3 new pots/ yr, but only about 1/3 are terracotta. the ones above are two of the newest and are sort of a mixture where the bottom is glazed but the upper part isn't. aside from only a few, i have a saucer under every pot i can find one to fit which helps a little, but frankly we don't have many very hot days. this past week has been an exception, but it was still in the low 80's. we also have a fairly moderate humidity so that helps a bit, too. regardless, i try to be judicious with water. i'd rather skip a day until i see slightly drooping leaves. this year i also added about 25% Perlite to my regular potting soil. the one plant i had to dig up had the best root structure i've ever seen.