You might need to water everyday just keep an eye on them. They are in pots so it is hard to say depending on the drainage. (they are in shade, right?)..They cannot be wet but not dried out either. Keep them moist and during the winter you will see them go dormant so you will not water hardly any then. I never water over the winter or mulch because they will rot. Also some people lay the pots on their side to keep them from filling with water when it rains. I don't know where you have them but just keep that in mind.
I haven't had any rain in almost two weeks, that is a first for this year. We have been in the 90's all during Aug and up till last Friday when a cold front came through. We were 92° last Thursday and then Friday 82° then Saturday 72° but no rain with this one.
