Ornamentals do have a place in California if they’re done right.
California has been plagued by overwatering for years. Nuisance flow in the form of runoff from irrigated landscapes has been evidenced in California’s storm drains. “Widespread over-watering has simply become an accepted source of both water consumption and non-point source pollution throughout the irrigated western U.S.” Eliminating overwatering through technology such as a soil moisture based system provides 100% irrigation efficiency. Another solution is to encourage deep-rooted plants and deeper soils for managed landscapes. She warns that without stewardship of California’s gardens, consequences will be dire. Vegetation provides significant cooling. Reducing vegetation will exacerbate warming. Done right, there’s plenty of opportunity for ornamentals. (2015) By Dr. Diane Pataki, University of Utah June 23, 2015 on The Nature of Cities.