Events in Brentwood, TN Wildflower Hikes - Owl's Hill Nature Sanctuary Adults Only Tuesdays – March 14, 21, 28 and April 4, 11, 18, 25 9:30 – 11:30am; Cost: $7/hikers The wildflowers are blooming: Spring is here! Come enjoy all the colors this season offers as we hike the trails of Owl's Hill. Watch the browns of winter give way to the spectrum of spring while we look for Blue-eyed Mary, Dutchman's Britches, and Spring Beauty. This is an adult only hike.