These homeowners started this garden 30 years ago when they moved into the house. For years they cultivated an English garden, with lots of perenniels and seasonal blooms. Over the years they've gradually switched to low water, very low maintenance plants, though they still prefer the overgrown slightly wild look. Every few months they notice more plants popping up in areas they have migrated to, so the garden becomes more crowded and surprising, which is part of the fun.
They don't water at all in the winter unless there's an extended heat wave. Sprinklers are used sparingly in the summer; they find it more effective to water by hand when necessary. They tried a drip system which was not successful. Overall, the amount of water needed is negligible.
Butterflies and hummingbirds seem to enjoy the garden.