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The Desert Museum Palo Verde tree is an ideal low water use choice for Southern California landscaping. Photo: Danielle Bardgette/Creative Commons-Flickr trees

More Trees, Please

Planting trees improves water quality by reducing runoff and soil erosion. It’s also good for the wallet. Healthy, mature trees can add an average of 10 percent to a property’s overall value. 

Trees properly placed around buildings can reduce air conditioning needs by 30 percent, and can save 20 to 50 percent of the energy used for heating. 

Consider the mature size of the three when you first plant it. At the store, it’s probably in a 15-gallon container, but a small tree will grow into a 30-foot tall tree with a 30-foot wide canopy of branches in a few years. If you have selected a large tree, it could be 70 feet tall and equally as wide.  

Make sure the placement of the tree is sufficiently far away from homes and other structures. Small trees (30 feet wide or less at maturity) should be placed no closer than 10 feet. Large trees (70 feet wide or more at maturity) should be planted at least 20 feet from houses.  

Five low water landscape trees 

The Desert Museum Palo Verde tree is an ideal low water use choice for Southern California landscaping. Photo: Danielle Bardgette/Creative Commons-Flickr trees

The Desert Museum Palo Verde tree is an ideal low water use choice for Southern California landscaping. Photo: Danielle Bardgette/Creative Commons-Flickr

Not sure which trees are smart water-wise choices for the San Diego region? These are five favorites. 

Desert Willow (Chilopsis linearis) 

Desert Museum Palo Verde (Parkinsonia ‘Desert Museum’) 

CA Redbud (Cercis occidentalis) 

Catalina Ironwood (Lyonothamus floribundus) 

Hybrid Strawberry Tree (Arbutus ‘Manna’)  

Consider large shrubs as alternative choices 

California Mountain Lilac grows as a native plan throughout California. It attracts butterflies and other insects. Photo: Wanderingnome/Creative Commons-Flickr trees

California Mountain Lilac grows as a native plan throughout California. It attracts butterflies and other insects. Photo: Wanderingnome/Creative Commons-Flickr

Large shrubs can be good choices for screening unwanted views. But be considerate of the viewshed of your neighborhood. Will the shrubs block a special view for others?  

Several of the best low-water trees and shrubs for screening are:  

Catalina Cherry (Prunus iliofolia ssp. Lyonii) 

Pacific Was Myrtle (Myrica california)  

Torrey Pine (Pinus torreyana) 

Tecate Cypress (Cuppressus forbesii) 

California Mountain Lilac (Ceanothus ‘Ray Hartman’)  

 

This article was inspired by the 71-page Sustainable Landscapes Program guidebook available at SustainableLandscapesSD.org. The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.    

 

 

  

Largest Bay Area Dam Built In 20 Years Is Finally Finished

After toiling away in the remote hills east of Interstate 680 on the Alameda-Santa Clara county line for seven years, hundreds of construction workers have finally finished the largest dam built in the Bay Area in 20 years. The 220-foot tall dam at Calaveras Reservoir — as high as the roadway on the Golden Gate Bridge soars above San Francisco Bay — replaces a dam of the same size, built in 1925.  State dam inspectors flagged the older dam in 2001 as at risk of collapse in a major earthquake on the nearby Calaveras Fault. If it had failed, state officials estimated it could have sent a 30-foot wall of water into Fremont and neighboring communities, potentially killing thousands of people.