From staff reportsOklahoma City's fourth water conservation demonstration garden is open at Bluff Creek Park, 4551 W Hefner Road (entrance at 11301 N Meridian). Stroll through the water conservation demonstration garden and see practical, firsthand examples of Oklahoma-tough plant materials and landscape designs adaptable to home landscapes. The Oklahoma City Utilities Department worked with the Oklahoma Cooperative Extension Service on the garden to promote water conservation through proper outdoor watering and landscaping. The demonstration garden also will be used as a teaching tool for workshops and seminars. Read more on NewsOK.com