Local botanist and native plant expert Robin Kobaly will be the featured speaker at a presentation hosted by the Mojave Water Agency. Kobaly will discuss “Surrounded by Ancients,” about the long-lived native plants of the southwest, how to estimate their age, and how they can enhance desert landscaping. The lecture will be held Tuesday, March 25, from 5:30 to 7 p.m. at MWA offices in Apple Valley. To register to attend, call Gloria at 760-946-7001 by March 24.