I've been growing a container garden on my balcony for a few months now, and I love the way it looks. However, I've noticed that during hot spells, my plants start to wilt and I have to water them multiple times a day. I've tried using self-watering planters, but I'm not sure if they're worth the extra cost. Has anyone else had this problem? What are some affordable solutions I can try to keep my plants hydrated during these hot periods?