Angela O'Callaghan is Associate Professor, Nevada Cooperative Extension - Specialist in Social Horticulture. Norm Schilling is owner of Schilling Horticulture Group in Las Vegas. His prior experience includes horticulture supervisor at UNLV and lead groundskeeper at the Gardens at the Las Vegas Springs Preserve (formerly the Desert Demonstration Garden). He's an ISA certified arborist and teaches a variety of horticulture and tree care topics. You're invited to submit questions to Desert Bloom.They'll take you to some of their favorite landscapes in Las Vegas and introduce you to horticultural experts working in Southern Nevada.Check out Norm Schilling's list of "Wonderful Plants on the Cheap and Easy" and "Norm's Favorite Desert Trees".Send your comments to letters@knpr.org.