Every year on the first Saturday in June the city of Dallas teams up with Addison, the Texas Agrilife Extension Service and the Master Gardeners of Dallas County to present a tour of gardens and landscaping that demonstrate sound water conservation techniques. The gardens and landscape installations on the tour always present a delightful and surprisingly broad spectrum of possibilities, from true xeriscaping with lots of gravel and cactus to more verdant transitional gardens. In the verdant examples, gardeners have marshaled combinations of drip irrigation with native species to show that a luxuriously green garden can be water-wise at the same time, even in Dallas. Every year there's a new, better way to do it. The tour presents 30-minute talks on water-wise techniques at the various headquarters.