Cutting dahlias for indoor vases is a banner day at my house. Sometimes just one giant bloom in a shallow bowl of water is enough to brighten the kitchen. The spectrum of colors is dazzling and I find the effort to plant the tubers in the Spring and dig up at the end of Summer completely worth it!
I came home to pots of wilted dahlias after a hot, sunny day. I was concerned they were goners but after a good drink of water they bounced right back. Dahlias thrive in consistent moist soil but they are also forgiving - which I suspect has to do with how much water they retain in their stems.