Yes! I agree with the kiddie pool idea. I almost did that myself this year. It is always in the back of my mind to try that during the driest periods of summer here for any potted plants. They make all sizes of kiddie pools too. They have a very small one that I think about getting every year when they go on clearance.
Good luck with your new daylilies and garden beds. Do share photos. I love seeing what others are creating in the yard!
