Aeonium2003 said:
As for repotting, has anyone had their teracotta clay pots grow moldy? It seems to happen during our wet winters. 
That's the reason I stopped using teracotta.
I generally ignore any kind of discoloration on terracotta. I prefer the aging look on terracotta to new, unused terracotta - by a lot. Terracotta is my preferred material for a container, though I use a variety of containers. Probably my habits combined with my climate, perhaps, but it's the most plant friendly of all the containers I use. I can't think mold on the container would harm the plant it contains., would it?
