I have good luck with pots, Teresa. I buy plastic buckets.... about 4 gallon size and make holes in them about an inch up on the sides. This allows water to stay in the very bottom as it sorta acts like a tray that catches water. You cannot leave pots during a drought to fend for themselves as the roots cannot go deep to get to water but If you water them thoroughly they will do better during a drought than the ones in the ground. Make sure the pots are not a dark color. If you go into your garden after the sun has been on the side of the pot and put your hand on it you will see what the little roots have to contend with. No, a dark pot will not kill an iris but they do a lot better without having some of their roots baked.
