Well, no they are not bad. I use both clay and plastic and find no problems with either, yet some people say plastic pots encourage mold.

All you gotta look out for is watering times with clay cos it'll absorb some of the water you give the plant. Otherwise its fine.
LIP Reviewed by LIP on . CLay pots Are clay pots bad? I have 10 of my 3 week old chicas in little 4" pots right now... Rating: 5