As the unprecedented drought continues to affect California and the San Diego region, homeowners can still balance the need to conserve water as efficiently as possible while preserving valuable landscaping, including trees. Trees can be maintained while following California’s water guidelines.
As the unprecedented drought continues to affect California and the San Diego region, homeowners can still balance the need to conserve water as efficiently as possible while preserving valuable landscaping, including trees.
Trees can be maintained while following California’s water guidelines. Trees are among the most valuable investment in San Diego County’s landscape – including your own WaterSmart landscaping. No other landscape plant offers more significant benefits to your landscape and the environment. Trees provide much-needed shade and cooling to increasingly hot neighborhoods and cities and are among the most efficient natural ways to remove harmful carbon dioxide fueling global warming.
When mature trees die due to lack of irrigation, they become a dangerous fire hazard. They are expensive to remove. Young replacement trees take many years to provide the benefits of mature trees. Taking care of your trees during drought ensures a tremendous return on this investment.
Even when not in an acute drought, trees planted in a Mediterranean climate often need some additional water. Mimic the way Mother Nature provides water for the most effective irrigation.
Healthy tree roots reach three to four feet deep at the outer edge of a tree’s branches, where rainfall would naturally run off leaves. This area at the edge of the tree canopy is called the drip line.
When it does rain, Mother Nature’s rainfall is primarily steady, slow, and spread out. Follow this method to deliver a prolonged, slow soaking. Trees prefer infrequent deep watering. During drought, slow watering every two or three weeks for more established trees is sufficient. Avoid runoff with multiple cycles to allow water to soak deeply. Irrigate early in the morning to minimize evaporation.
Keep in mind turf competes with your trees for water. Even if you want to retain some lawn, it’s smart to remove the lawn immediately around your trees and replace it with WaterSmart landscaping.
Carefully selected trees are the most valuable addition to your sustainable landscaping. Photo: Helix Water District
Drought is a reality in the San Diego region as average temperatures increase. As summer months become hotter, soils dry out. Trees must be deep watered to supply their roots and preserve their health.
San Diego forestry and landscaping professionals are working with the San Diego County Water Authority and its 24 member agencies to help protect our region’s trees while also conserving water. Find more resources and learn more at drought.katestrees.org.
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(Editor’s Note: The San Diego County Water Authority and its 24 member agencies offer programs, resources, and incentives to improve water-use efficiency for residential, commercial, and agricultural users. WaterSmart choices are a way of life in the region. Stay WaterSmart San Diego! For more water-use efficiency resources, go to WaterSmart.SD.org. The Helix Water District is one of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)
The Vista Irrigation District Board of Directors recognized Jennifer Dell as its 2022 WaterSmart Landscape Contest winner for her creative, colorful use of materials and plants. The annual contest recognizes outstanding water-wise residential landscapes based on overall attractiveness, appropriate plant selection, design, appropriate maintenance, and efficient methods of irrigation.
Whether you installed a new water-saving landscape or are just looking for tips on how to conserve in your existing landscape, here are ways to maintain your landscape while saving water.
The Vista Irrigation District Board of Directors recognized Jennifer Dell as its 2022 WaterSmart Landscape Contest winner for her creative, colorful use of materials and plants.
The annual contest recognizes outstanding water-wise residential landscapes based on overall attractiveness, appropriate plant selection, design, appropriate maintenance, and efficient methods of irrigation.
When Jennifer Dell purchased her home in 2019, her first priority was removing the water-thirsty turf. Photo: Vista Irrigation District
Replacing the water-intensive lawn with a Watersmart landscape was Dell’s priority when she purchased her home in 2019. She used upcycled landscape materials and low-water use trees, shrubs, and perennials to transform her front yard into a thriving landscape.
Podocarpus and Purple Hopseed evergreens circle the yard to create a verdant privacy screen full of seasonal color all year. Deep purple spears from Pride of Madeira, Lavender, and Mexican Sage Bush create a colorful and blossoming habitat for butterflies, bees, and birds. Honeysuckle, Star Jasmine, and Floribunda Iceberg Roses provide fragrant bursts of color.
The new landscape features pollinator friendly perennials and shrubs along with fruit trees. Photo: Vista Irrigation District
Dell also planted a variety of fruit trees she irrigates with rainwater collected in a rain barrel catchment system. “I wanted a lush and colorful landscape with as low a water bill as possible,” said Dell. What was a mundane, flat waste of water is now and will increasingly be a joyful, colorful, and dynamic habitat for humans and other wildlife.”
“Replacing your grass lawn with a WaterSmart landscape is one of the best ways to reduce your water use,” said Brent Reyes, water conservation specialist. “Additionally, turf removal rebates are available to help with the cost.”
Rebates, tips, classes and other water-saving information: sdcwa.org/your-water/conservation/.
(Editor’s note: The Vista Irrigation District is one of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)
If you choose to design, implement and maintain a new WaterSmart landscape yourself, you can follow the Homeowner’s Guide to a WaterSmart Landscape to help you plan, prepare, and work through each step. Free classes and online videos can help.
If you choose to design, implement and maintain a new WaterSmart landscape yourself, you can follow the Homeowner’s Guide to a WaterSmart Landscape to help you plan, prepare, and work through each step. Free classes and online videos can help.
If you’re interested in hiring a landscape professional, the WaterSmart Landscape guide is also helpful as a reference to help you understand the steps involved. You will be better equipped to work through the project with the help of a landscape professional.
Professionals trained in different aspects of sustainable landscaping can help you ensure the success of your project. Photo: San Diego County Water Authority
Landscape Architect. A professional licensed by the State of California who can design and develop detailed construction plans and specifications. A Landscape Architect is not licensed to provide installation/construction services. For more information, visit the American Society of Landscape Architects (ASLA) San Diego Chapter website and the State Licensing Board website.
Landscape Designer. A person who provides landscape design and horticulture services, such as design concepts, planting plans, and selection of materials. For more information, visit the California Association of Professional Landscape Designers website.
Landscape Contractor. A professional licensed by the State of California to install/construct, and maintain landscapes. If a Landscape Contractor installs a project, they can also design it. For more information, visit the California Contractors Association website and the State Licensing Board website.
QWEL (Qualified Water Efficient Landscaper) Trained in water-wise landscape practices, including plant selection, irrigation system design, and water management, a QWEL graduate will help meet your landscape needs while keeping your outdoor water use in check.
Irrigation Designer. A person who provides irrigation design services. Irrigation designers may achieve certification with the Irrigation Association. Visit its website for more information.
For more tips on hiring a professional to help you create a WaterSmart Landscape, refer to the eGuide to a WaterSmart Lifestyle for additional information at WaterSmartSD.org.
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(Editor’s Note: The San Diego County Water Authority and its 24 member agencies offer programs, resources, and incentives to improve water-use efficiency for residential, commercial, and agricultural users. WaterSmart choices are a way of life in the region. Stay WaterSmart San Diego! For more water-use efficiency resources, go to WaterSmart.SD.org.)
Whether you install a new WaterSmart Living landscape or are just looking for tips on how to conserve water in your existing landscape, the following section can help you make an immediate impact on your landscape water savings.
Whether you install a new WaterSmart Living landscape or are just looking for tips on how to conserve water in your existing landscape, the following section can help you make an immediate impact on your landscape water savings.
Plan ahead. Keep a copy of the plant legend, irrigation plan, and runtime schedule to make it easy to buy replacement plants and parts. This will also help locate and troubleshoot pipes to make repairs or adjustments if needed in the future.
Monitor and minimize watering. When set up correctly, your smart controller will automatically adjust watering times to respond to changes in weather. To maximize water savings, program your controller to apply only the amount of water needed for each zone. A good rule of thumb is to water only when the top inch of soil is dry. If you see runoff before the end of the irrigation cycle, adjust the schedule to more often for a shorter duration each time.
To schedule your irrigation correctly, you must know your equipment type, plant water use, soil texture, and watering zone. Use the Watering Calculator on bewaterwise.com to create a basic watering schedule for your property. Adjust as needed for optimum plant growth and water efficiency.
Water at appropriate times. If possible, schedule your irrigation system to run in the early morning. It is best to avoid watering at night to prevent fungus and mildew problems from night time watering. Avoid watering midday to eliminate excessive evaporation.
Managing irrigation schedules is crucial to caring for your WaterSmart Living landscaping. Photo: Irrigation Association
Check irrigation equipment. You may not witness the system running in the early morning hours. Be sure to manually turn the system on seasonally and after severe weather changes to catch potential problems. Check drip systems to ensure emitters are working and clean out filters as needed. Over time, drip emitter locations may need to be relocated as your plants grow. Adjust spray sprinklers to prevent overspray and runoff.
Fertilizing tips. Use an organic fertilizer or compost. Compost can be made from garden waste and some kitchen waste to continually enrich your soil. For more information and recipes for do-it-yourself compost, see the Water Authority’s eGuide to a WaterSmart Lifestyle.
Weed control. Weed naturally whenever possible. Using herbicides can be costly and, if not correctly applied, can damage the environment. Designing and maintaining a healthy landscape can be the best defense against weeds. Hand pull any weeds that come up in your garden every few weeks. Pull them before they go to seed.
Manage pests. The key to controlling pests and diseases is to maintain healthy soil and select plant species that are not prone to pest problems. Consider following Integrated Pest Management (IPM) practices. Use chemical control only as a last resort. Try spraying pests with a blast of water, release beneficial bugs (ladybugs and lacewings), spray insecticidal soap, or use compost tea. Consider replacing pest-prone plants. See our eGuide for more information on natural pest control and compost tea. When using chemical control, always follow the manufacturer’s dosage, application and safety information.
Maintain a two-to-three-inch layer of mulch. Replace the mulch as needed.
Use a broom or blower to clean driveways and sidewalks instead of a hose.
Make a plant maintenance checklist. Keep a copy of your plant list and make a checklist of maintenance requirements for each plant.
Monitor your monthly costs and water use on an ongoing basis.
Enjoy the peace of mind from knowing you did your part to protect our natural resources and the environment.
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(Editor’s Note: The San Diego County Water Authority and its 24 member agencies offer programs, resources, and incentives to improve water-use efficiency for residential, commercial, and agricultural users. WaterSmart choices are a way of life in the region. Stay WaterSmart San Diego! For more water-use efficiency resources, go to WaterSmart.SD.org.)
Successfully installing water-saving irrigation starts long before you get out your tools. You need to complete an assessment of your landscape plan’s specific water needs, draw a complete plan showing the layout, then select your irrigation and purchase your irrigation equipment. If your soil needs amendments (and it almost certainly does), you must get this done first. With all of this important prep work complete, you can start to implement the design.
The Water News Network is San Diego County’s source for water news and information.
