Native Plant Combinations That Thrive in Tucson’s Caliche Soil
Posted on July 17, 2026 at 7:16 am
Tucson homeowners attempting to create beautiful landscapes quickly discover caliche, the concrete-like calcium carbonate layer lurking beneath desert soil throughout Southern Arizona. This hardpan barrier prevents root penetration and blocks drainage, frustrating even experienced gardeners. However, selecting native plants adapted to these conditions transforms caliche from obstacle into opportunity.