Yes. The emergency regulation only prohibits irrigating turf (lawn) on public street medians. Trees provide many environmental benefits, such as shade, carbon storage, and animal habitat. Urban trees also reduce heat island effects and associated health impacts, absorb and filter storm water, reduce urban flooding risk, protect air quality, and save energy by shading buildings. For more information on taking care of trees while saving water, see the Save Our Trees section within SaveOurWater.com.