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Hausmanns-Vallecitos Water District-landscape makeover-waterwise-WaterSmart

Winning Waterwise Landscapes in the Vallecitos Water District

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San Diego County residents continue to embrace a conservation ethic by creating beautiful, waterwise landscapes. The Vallecitos Water District reports that more District water customers are reducing their outdoor water use and adopting WaterSmart practices.

Three Vallecitos customers are the most recent examples of the landscape makeover trend, creating beautiful landscapes, and winning the regional Watersmart Landscape Contest.

Neighbors often ask the Hausmanns about their new landscaping. Doug Hausmann often shares plants and lends a hand on their projects. Photo: Vallecitos Water District winning

Neighbors often ask the Hausmanns about their new landscaping. Doug Hausmann often shares plants and lends a hand on their projects. Photo: Vallecitos Water District

Best in District winners Doug and Pam Hausmann have lived in San Diego County since 1975.  They both became interested in succulents and decided to remove their sprinkler system. They now water by hand. Some of their plants get by with as little as four waterings a year.

By propagating and selling succulents, the Hausmanns raise about $1,000 a year on behalf of a nonprofit supporting a friend’s grandson affected by a rare disease. Photo: Vallecitos Water District

The Hausmanns started growing different plants from cuttings provided by neighbors, and from plants they purchased and then divided. Their success with propagation generated interest in low water use gardening among their friends and neighbors. The couple donated their propagated plants and expertise, helping neighbors to plant waterwise succulent gardens at their own homes.

Waterwise landscape as philanthropic enterprise

The Hausmanns propagation talent helped raise money for “24 Hours for Hank,” which supports research in Cystinosis, a rare genetic disease. Cystinosis affects 500 people in the United States. Because the disease only affects a small percentage of the population, research money is scarce. By propagating and selling succulents, the Hausmanns raise about $1,000 a year for the charity on behalf of a friend’s grandson affected by Cystinosis.

The Hausmanns were selected as contest winners for their successful landscape project, for the philanthropy it generated, and for the teaching opportunity it inspired.

Saving water, saving wildlife

 

All three winning landscape designs provide habitat for pollinators and birds. Photo: Vallecitos Water District winning

All three winning landscape designs provide habitat for pollinators and birds. Photo: Vallecitos Water District

Tours of residential native landscapes and a visit to the Vallecitos Water District Sustainable Demonstration Garden inspired second place winner Bruce Ferguson to follow through on his desire to transform his yard into a more natural and native setting, attractive to wildlife.

Ferguson loves to see lizards, birds, and butterflies. His garden design reduces stormwater runoff and allows for more infiltration of rainwater into the ground by including two small bioswales. He added two small ponds to provide a water source for animals. After the makeover, Ferguson’s water savings range from 20% to 40% monthly.

Bruce Ferguson completed all the work himself on his landscape makeover. Photo: Vallecitos Water District

Third place winner Ellen Kaplan replaced her lawn with a drought-tolerant garden to conserve water, eliminate expensive monthly landscaping, and to give her home more curb appeal.

She used a variety of palms, annuals, kangaroo paws, and succulents. She replaced the existing sprinkler system (which she admitted did a better job of watering her driveway) with a drip system providing targeted watering only where needed.

Ellen Kaplan enjoys watching hummingbirds visiting her new landscaping - and so does her cat from safely inside the house. Photo: Vallecitos Water District winning

Ellen Kaplan enjoys watching hummingbirds visiting her new landscaping. Photo: Vallecitos Water District

All three winners received a gift certificate to Green Thumb Nursery in San Marcos to support their waterwise gardening adventures and a Watersmart Landscape Contest Winner sign for their front yards.

(Editor’s note: The Vallecitos Water District is one of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)

Native Plant Communities in Sustainable Landscaping

/in , , /by /Water News Network

Plants growing wild naturally arrange themselves into communities with other plant varieties based on their shared characteristics such as water and nutrient needs. This natural selection extends to interactions with each other, and with other species such as insects, birds, and other animals.

Full Story

Successful Sustainable Landscaping is a Click Away for Fallbrook, Rainbow Customers

/in , , /by /Fallbrook Village News Mentioned: San Diego County Water Authority

No matter whether their landscaping is just a few square feet alongside a front porch or estate acreage, thousands of San Diego County residents have learned to embrace sustainability as a central principle for creating and renovating their landscapes. The San Diego County Water Authority offers financial incentives and educational resources to customers in Fallbrook and Rainbow to improve their landscaping.

Full Story

Let Nature Be Your Guide: Compost vs. Mulch

/in , /by

You may not know the difference between compost and mulch, but your landscape soil does. Compost and mulch represent two different soil treatments with different advantages when used in a watersmart landscape plan.

Compost is made of organic matter such as food scraps, landscape debris, or livestock manure that have already been partially consumed and mostly decomposed by microorganisms. You cannot tell the original source of compost. Good quality compost brings the helpful OWL formula of oxygen, water, and life together in one package. It is used to amend your landscape soil by adding valuable nutrients it may be missing.

Mulch can be either organic or inorganic material that covers soil. Unlike compost, it’s not worked into the soil itself. Another difference is that the original recycled debris source of mulch is often identifiable. Mulch can be made from organic sources (grass clippings, leaf and yard litter, shredded wood trimmings) or inorganic sources such as gravel or decomposed granite (DG). Mulch is a soil topping.

Healthy, biologically diverse mulch contains microbes with the ability to “knit” the organic material together, forming a thick blanket. Mulch covers and protects the soil and plant roots from temperature swings, retains moisture by slowing down evaporation from the surface of the soil; and keeps weeds from sprouting by reducing sunlight penetration to the soil surface.

Top Tips for Using Compost

Compost the right way, including using compost as mulch to prevent erosion and help soil filter pollution. Photo: Ben Kerckx/Pixabay

Compost can be purchased, or it can be homemade. The compost-making process, or composting, involves creating the optimal conditions for the microbes to do their transformative work.

When compost looks like soil, you can work it directly into the soil. When compost is more coarse or has visible bits of the original materials, it is more likely used on top of the soil instead of as an incorporated soil amendment worked in.

Compost works in several ways. The compost itself contains particles that improve soil structure. Next, as compost decomposes in the soil, it encourages the formation of soil macroaggregates. These macroaggregates are composed of existing soil particles and decomposed organic matter, which combine to create a more stable and better functioning soil structure.

Top Tips for Using Mulch

Mulch builds soil structure over time and holds in moisture. Photo: Monsterkoi/Pixabay compost

Mulch builds soil structure over time and holds in moisture. Photo: Monsterkoi/Pixabay

Mulch always sits on the surface of your soil. It is never worked in. Recycled organic material is the most effective type of mulch because it builds soil structure over time. It creates a durable, protective barrier.

The smaller the debris pieces are, and the more mixed the organic pieces are, such as leaves with wood chips, the faster it decomposes. When building your soil, small mixed mulch is best. When compost is made from course materials like decomposed granite, you can also apply it to the top of your soil as mulch.

Artificial and inorganic mulches (DG, gravel, rubber chips) are mainly decorative. They do not contribute to soil life or plant health. They are best used in limited applications, such as creating natural pathways.

To learn more about your soil, sign up for Soil & Site Assessments virtual workshop.

This article is part of a year-long series inspired by the 71-page Sustainable Landscapes Program guidebook. The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.

Set yourself up for landscaping success by building the best foundation in your soil structure. Photo: walkersalmanac/Pixabay healthy soil

Oxygen, Water, and Life Create Healthy Landscape Soil

/in , /by

Your landscaping soil needs three things to feed the billions of microbes within it to transform brick-hard, lifeless dirt into healthy, living soil sponges: oxygen, water, and life. Think OWL to remember these important, interconnected factors.

Oxygen lets microbes breathe free

Oxygen is needed by healthy plant roots and soil organisms. Healthy soil has lots of tiny little pockets of air. When soils are eroded, graded, or disturbed, their structure becomes compacted and hard. Compaction takes place when tiny air and water bubbles are squeezed out of the soil. This kills the healthy microbes working to keep your soil replenished. Microbes can be killed by fertilizers, pesticides, or even heavy traffic from people or vehicles. 

Water for your microbes and plants

Microbes and plans both need water to live. But too much water in your soil will displace oxygen, saturating the soil. This creates an anaerobic condition. It is the unhealthy microbes like bacteria, viruses, or parasites that prefer anaerobic soil. If this condition persists, diseases may develop. They will endanger the health of your garden.

Water is constantly moving through the soil. Water in the soil needs to be replenished as plants use it, as it evaporates from the soil surface, and as gravity pulls it down past the root zone of your plants.

Bring your soil to life

The microbes consume organic matter, and then they are consumed by bigger creatures (worms, ants, slugs, centipedes, larvae, etc.). They are consumed in turn by creatures further up nature’s food chain. Photo: Malcolm Fowles, Wikipedia

The microbes consume organic matter, and then they are consumed by bigger creatures (worms, ants, slugs, centipedes, larvae, etc.). They are consumed in turn by creatures further up nature’s food chain. Photo: Malcolm Fowles, Wikipedia

Life in the soil includes all the bacteria, protozoa, nematodes, and fungi, the food they eat, the excretions they make, and the root systems they sustain. Living microbes are most quickly incorporated into your soil by adding high-quality compost.

Plants attract microbes to their roots by feeding them carbon. Bacteria and fungi hold the soil together with microscopic glues and binders. The microbes consume organic matter, and then they are consumed by bigger creatures (worms, ants, slugs, centipedes, larvae, etc.). They are consumed in turn by creatures further up nature’s food chain.

Carbon and other nutrients cycle through these many life forms, creating healthy living soil, no matter what the soil type.

Without any of these elements, your landscaping will not thrive. Organic matter, planning and some labor may be involved, but creating healthy soil using the OWL method –  Oxygen, Water and Life – will pay off in reduced maintenance, reduced inputs, reduced pollution on land and in our waterways, and the beauty of your thriving, healthy landscape.

This article is part of a year-long series inspired by the 71-page Sustainable Landscapes Program guidebook. The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.

 

Matilija poppies, or Romneya coulteri, have the largest flower of any poppy. It's native to dry, sunny areas from California to Baja and are good choiices for successful sustanable landscaping. Photo: Kimberly Rotter / Pixabay

Follow Four Key Principles for Successful Sustainable Landscaping

/in , /by

Efficient water use is an important responsibility that comes along with the benefits of living in San Diego County’s beautiful Mediterranean climate.

No matter whether your landscaping is just a few square feet alongside a small front porch, or covers many acres on a luxury estate, San Diego County residents have learned to embrace sustainability as a central principle for creating or renovating their landscapes. Irrigation is among the highest uses of water for most homeowners.

Treating every garden, no matter its size, as its own mini-watershed allows it to capture and retain water to nurture a diverse habitat of plants and helpful insects.

Watersmart living not only saves money, but it creates vibrant yards, reduces energy use, protects our natural resources, and reduces landscape maintenance. It may even improve property values. It also creates a shared sense of purpose about how we use our limited water supplies.

What elements do you need to consider when taking a watershed approach to your landscape?

Learn Four Key Principles of Sustainable Landscaping

The four principles of sustainable landscaping are on display at the San Diego County Water Authority's Sustainable Landscaping Demonstration Garden outside its headquarters in the Kearny Mesa area of San Diego. Photo: Water Authority

The four principles of sustainable landscaping are on display at the San Diego County Water Authority’s Sustainable Landscaping Demonstration Garden at its Kearny Mesa office in San Diego. Photo: San Diego County Water Authority

The formula for successful sustainable landscaping includes four key principles:

  • Healthy, Living Soils: Healthy, living soils rich in organic content feed a complex soil food web. The soil holds water like a sponge, and has nutrients for optimal plant health.
  • Climate Appropriate Plants: Many choices of beautiful groundcovers, shrubs, and trees are compatible with San Diego’s mild Mediterranean climate. These plants use less water and display diverse colors, textures, and shaped with endless design options.
  • Rainwater as a Resource: Sustainable landscapes make the most of natural rainfall. Slowing the flow of water off rooftops and hard surfaces allow it to be captured and sink into the soil or be stored for later use.
  • High-Efficiency Irrigation: Your irrigation can maximize water-use efficiency through smart controllers to adjust water automatically to changing weather conditions, and high-performance distribution components to regulate pressure and tailor water delivery to the exact needs of your landscape plants.

The four principles of successful sustainable landscaping are on display at the San Diego County Water Authority’s Sustainable Landscaping Demonstration Garden at its Kearny Mesa office in San Diego.

The 3,000-square-foot garden can be viewed by the public. It includes informational signage introducing visitors to key sustainable landscaping principles. Specific plant types that grow successfully in the region’s climate are also identified. Many are Southern California natives.

This article is part of a year-long series inspired by the 71-page Sustainable Landscapes Program guidebook. The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.

A beautiful Santee garden oasis is the winner of the 2023 Padre Dam Municipal Water District Landscape Contest. Photo: Padre Dam Municipal Water District

Santee Garden Oasis Wins 2023 Padre Dam Municipal Water District Landscape Contest

Santee homeowners Edie and Tate Thomas created a beautiful landscape…
Hausmanns-Vallecitos Water District-landscape makeover-waterwise-WaterSmart

Winning Waterwise Landscapes in the Vallecitos Water District

/in , /by

San Diego County residents continue to embrace a conservation ethic by creating beautiful, waterwise landscapes. The Vallecitos Water District reports that more District water customers are reducing their outdoor water use and adopting WaterSmart practices.

Three Vallecitos customers are the most recent examples of the landscape makeover trend, creating beautiful landscapes, and winning the regional Watersmart Landscape Contest.

Neighbors often ask the Hausmanns about their new landscaping. Doug Hausmann often shares plants and lends a hand on their projects. Photo: Vallecitos Water District winning

Neighbors often ask the Hausmanns about their new landscaping. Doug Hausmann often shares plants and lends a hand on their projects. Photo: Vallecitos Water District

Best in District winners Doug and Pam Hausmann have lived in San Diego County since 1975.  They both became interested in succulents and decided to remove their sprinkler system. They now water by hand. Some of their plants get by with as little as four waterings a year.

By propagating and selling succulents, the Hausmanns raise about $1,000 a year on behalf of a nonprofit supporting a friend’s grandson affected by a rare disease. Photo: Vallecitos Water District

The Hausmanns started growing different plants from cuttings provided by neighbors, and from plants they purchased and then divided. Their success with propagation generated interest in low water use gardening among their friends and neighbors. The couple donated their propagated plants and expertise, helping neighbors to plant waterwise succulent gardens at their own homes.

Waterwise landscape as philanthropic enterprise

The Hausmanns propagation talent helped raise money for “24 Hours for Hank,” which supports research in Cystinosis, a rare genetic disease. Cystinosis affects 500 people in the United States. Because the disease only affects a small percentage of the population, research money is scarce. By propagating and selling succulents, the Hausmanns raise about $1,000 a year for the charity on behalf of a friend’s grandson affected by Cystinosis.

The Hausmanns were selected as contest winners for their successful landscape project, for the philanthropy it generated, and for the teaching opportunity it inspired.

Saving water, saving wildlife

 

All three winning landscape designs provide habitat for pollinators and birds. Photo: Vallecitos Water District winning

All three winning landscape designs provide habitat for pollinators and birds. Photo: Vallecitos Water District

Tours of residential native landscapes and a visit to the Vallecitos Water District Sustainable Demonstration Garden inspired second place winner Bruce Ferguson to follow through on his desire to transform his yard into a more natural and native setting, attractive to wildlife.

Ferguson loves to see lizards, birds, and butterflies. His garden design reduces stormwater runoff and allows for more infiltration of rainwater into the ground by including two small bioswales. He added two small ponds to provide a water source for animals. After the makeover, Ferguson’s water savings range from 20% to 40% monthly.

Bruce Ferguson completed all the work himself on his landscape makeover. Photo: Vallecitos Water District

Third place winner Ellen Kaplan replaced her lawn with a drought-tolerant garden to conserve water, eliminate expensive monthly landscaping, and to give her home more curb appeal.

She used a variety of palms, annuals, kangaroo paws, and succulents. She replaced the existing sprinkler system (which she admitted did a better job of watering her driveway) with a drip system providing targeted watering only where needed.

Ellen Kaplan enjoys watching hummingbirds visiting her new landscaping - and so does her cat from safely inside the house. Photo: Vallecitos Water District winning

Ellen Kaplan enjoys watching hummingbirds visiting her new landscaping. Photo: Vallecitos Water District

All three winners received a gift certificate to Green Thumb Nursery in San Marcos to support their waterwise gardening adventures and a Watersmart Landscape Contest Winner sign for their front yards.

(Editor’s note: The Vallecitos Water District is one of the San Diego County Water Authority’s 24 member agencies that deliver water across the metropolitan San Diego region.)

Native Plant Communities in Sustainable Landscaping

/in , , /by /Water News Network

Plants growing wild naturally arrange themselves into communities with other plant varieties based on their shared characteristics such as water and nutrient needs. This natural selection extends to interactions with each other, and with other species such as insects, birds, and other animals.

Full Story

Successful Sustainable Landscaping is a Click Away for Fallbrook, Rainbow Customers

/in , , /by /Fallbrook Village News Mentioned: San Diego County Water Authority

No matter whether their landscaping is just a few square feet alongside a front porch or estate acreage, thousands of San Diego County residents have learned to embrace sustainability as a central principle for creating and renovating their landscapes. The San Diego County Water Authority offers financial incentives and educational resources to customers in Fallbrook and Rainbow to improve their landscaping.

Full Story

Let Nature Be Your Guide: Compost vs. Mulch

/in , /by

You may not know the difference between compost and mulch, but your landscape soil does. Compost and mulch represent two different soil treatments with different advantages when used in a watersmart landscape plan.

Compost is made of organic matter such as food scraps, landscape debris, or livestock manure that have already been partially consumed and mostly decomposed by microorganisms. You cannot tell the original source of compost. Good quality compost brings the helpful OWL formula of oxygen, water, and life together in one package. It is used to amend your landscape soil by adding valuable nutrients it may be missing.

Mulch can be either organic or inorganic material that covers soil. Unlike compost, it’s not worked into the soil itself. Another difference is that the original recycled debris source of mulch is often identifiable. Mulch can be made from organic sources (grass clippings, leaf and yard litter, shredded wood trimmings) or inorganic sources such as gravel or decomposed granite (DG). Mulch is a soil topping.

Healthy, biologically diverse mulch contains microbes with the ability to “knit” the organic material together, forming a thick blanket. Mulch covers and protects the soil and plant roots from temperature swings, retains moisture by slowing down evaporation from the surface of the soil; and keeps weeds from sprouting by reducing sunlight penetration to the soil surface.

Top Tips for Using Compost

Compost the right way, including using compost as mulch to prevent erosion and help soil filter pollution. Photo: Ben Kerckx/Pixabay

Compost can be purchased, or it can be homemade. The compost-making process, or composting, involves creating the optimal conditions for the microbes to do their transformative work.

When compost looks like soil, you can work it directly into the soil. When compost is more coarse or has visible bits of the original materials, it is more likely used on top of the soil instead of as an incorporated soil amendment worked in.

Compost works in several ways. The compost itself contains particles that improve soil structure. Next, as compost decomposes in the soil, it encourages the formation of soil macroaggregates. These macroaggregates are composed of existing soil particles and decomposed organic matter, which combine to create a more stable and better functioning soil structure.

Top Tips for Using Mulch

Mulch builds soil structure over time and holds in moisture. Photo: Monsterkoi/Pixabay compost

Mulch builds soil structure over time and holds in moisture. Photo: Monsterkoi/Pixabay

Mulch always sits on the surface of your soil. It is never worked in. Recycled organic material is the most effective type of mulch because it builds soil structure over time. It creates a durable, protective barrier.

The smaller the debris pieces are, and the more mixed the organic pieces are, such as leaves with wood chips, the faster it decomposes. When building your soil, small mixed mulch is best. When compost is made from course materials like decomposed granite, you can also apply it to the top of your soil as mulch.

Artificial and inorganic mulches (DG, gravel, rubber chips) are mainly decorative. They do not contribute to soil life or plant health. They are best used in limited applications, such as creating natural pathways.

To learn more about your soil, sign up for Soil & Site Assessments virtual workshop.

This article is part of a year-long series inspired by the 71-page Sustainable Landscapes Program guidebook. The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.

Set yourself up for landscaping success by building the best foundation in your soil structure. Photo: walkersalmanac/Pixabay healthy soil

Oxygen, Water, and Life Create Healthy Landscape Soil

/in , /by

Your landscaping soil needs three things to feed the billions of microbes within it to transform brick-hard, lifeless dirt into healthy, living soil sponges: oxygen, water, and life. Think OWL to remember these important, interconnected factors.

Oxygen lets microbes breathe free

Oxygen is needed by healthy plant roots and soil organisms. Healthy soil has lots of tiny little pockets of air. When soils are eroded, graded, or disturbed, their structure becomes compacted and hard. Compaction takes place when tiny air and water bubbles are squeezed out of the soil. This kills the healthy microbes working to keep your soil replenished. Microbes can be killed by fertilizers, pesticides, or even heavy traffic from people or vehicles. 

Water for your microbes and plants

Microbes and plans both need water to live. But too much water in your soil will displace oxygen, saturating the soil. This creates an anaerobic condition. It is the unhealthy microbes like bacteria, viruses, or parasites that prefer anaerobic soil. If this condition persists, diseases may develop. They will endanger the health of your garden.

Water is constantly moving through the soil. Water in the soil needs to be replenished as plants use it, as it evaporates from the soil surface, and as gravity pulls it down past the root zone of your plants.

Bring your soil to life

The microbes consume organic matter, and then they are consumed by bigger creatures (worms, ants, slugs, centipedes, larvae, etc.). They are consumed in turn by creatures further up nature’s food chain. Photo: Malcolm Fowles, Wikipedia

The microbes consume organic matter, and then they are consumed by bigger creatures (worms, ants, slugs, centipedes, larvae, etc.). They are consumed in turn by creatures further up nature’s food chain. Photo: Malcolm Fowles, Wikipedia

Life in the soil includes all the bacteria, protozoa, nematodes, and fungi, the food they eat, the excretions they make, and the root systems they sustain. Living microbes are most quickly incorporated into your soil by adding high-quality compost.

Plants attract microbes to their roots by feeding them carbon. Bacteria and fungi hold the soil together with microscopic glues and binders. The microbes consume organic matter, and then they are consumed by bigger creatures (worms, ants, slugs, centipedes, larvae, etc.). They are consumed in turn by creatures further up nature’s food chain.

Carbon and other nutrients cycle through these many life forms, creating healthy living soil, no matter what the soil type.

Without any of these elements, your landscaping will not thrive. Organic matter, planning and some labor may be involved, but creating healthy soil using the OWL method –  Oxygen, Water and Life – will pay off in reduced maintenance, reduced inputs, reduced pollution on land and in our waterways, and the beauty of your thriving, healthy landscape.

This article is part of a year-long series inspired by the 71-page Sustainable Landscapes Program guidebook. The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.

 

Matilija poppies, or Romneya coulteri, have the largest flower of any poppy. It's native to dry, sunny areas from California to Baja and are good choiices for successful sustanable landscaping. Photo: Kimberly Rotter / Pixabay

Follow Four Key Principles for Successful Sustainable Landscaping

/in , /by

Efficient water use is an important responsibility that comes along with the benefits of living in San Diego County’s beautiful Mediterranean climate.

No matter whether your landscaping is just a few square feet alongside a small front porch, or covers many acres on a luxury estate, San Diego County residents have learned to embrace sustainability as a central principle for creating or renovating their landscapes. Irrigation is among the highest uses of water for most homeowners.

Treating every garden, no matter its size, as its own mini-watershed allows it to capture and retain water to nurture a diverse habitat of plants and helpful insects.

Watersmart living not only saves money, but it creates vibrant yards, reduces energy use, protects our natural resources, and reduces landscape maintenance. It may even improve property values. It also creates a shared sense of purpose about how we use our limited water supplies.

What elements do you need to consider when taking a watershed approach to your landscape?

Learn Four Key Principles of Sustainable Landscaping

The four principles of sustainable landscaping are on display at the San Diego County Water Authority's Sustainable Landscaping Demonstration Garden outside its headquarters in the Kearny Mesa area of San Diego. Photo: Water Authority

The four principles of sustainable landscaping are on display at the San Diego County Water Authority’s Sustainable Landscaping Demonstration Garden at its Kearny Mesa office in San Diego. Photo: San Diego County Water Authority

The formula for successful sustainable landscaping includes four key principles:

  • Healthy, Living Soils: Healthy, living soils rich in organic content feed a complex soil food web. The soil holds water like a sponge, and has nutrients for optimal plant health.
  • Climate Appropriate Plants: Many choices of beautiful groundcovers, shrubs, and trees are compatible with San Diego’s mild Mediterranean climate. These plants use less water and display diverse colors, textures, and shaped with endless design options.
  • Rainwater as a Resource: Sustainable landscapes make the most of natural rainfall. Slowing the flow of water off rooftops and hard surfaces allow it to be captured and sink into the soil or be stored for later use.
  • High-Efficiency Irrigation: Your irrigation can maximize water-use efficiency through smart controllers to adjust water automatically to changing weather conditions, and high-performance distribution components to regulate pressure and tailor water delivery to the exact needs of your landscape plants.

The four principles of successful sustainable landscaping are on display at the San Diego County Water Authority’s Sustainable Landscaping Demonstration Garden at its Kearny Mesa office in San Diego.

The 3,000-square-foot garden can be viewed by the public. It includes informational signage introducing visitors to key sustainable landscaping principles. Specific plant types that grow successfully in the region’s climate are also identified. Many are Southern California natives.

This article is part of a year-long series inspired by the 71-page Sustainable Landscapes Program guidebook. The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.

A beautiful Santee garden oasis is the winner of the 2023 Padre Dam Municipal Water District Landscape Contest. Photo: Padre Dam Municipal Water District

Santee Garden Oasis Wins 2023 Padre Dam Municipal Water District Landscape Contest

Santee homeowners Edie and Tate Thomas created a beautiful landscape…
Otay Water District Logo

Otay Selects El Cajon Homeowner as Winner of the WaterSmart Landscape Contest

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Spring Valley, Calif. – At its virtual Board of Directors meeting on August 5, the Otay Water District Board recognized El Cajon resident Patricia Wood for taking the title of “Best in District” in the Otay Water District’s 2020 WaterSmart Landscape Contest. Her landscape demonstrates a well thought-out design, methods for efficient irrigation, and appropriate plant selection and maintenance.

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Even in our arid climate, the first rainfall can add up to a lot of water runoff - save as much as possible in your landscape. Photo: Denis Doukhan/Pixabay

Prepare Your Landscape for the First Rain

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After a dry spell, the first rainfall is the most important water to capture for your landscape. This is called the “first flush.”

In arid regions like San Diego County, this happens every year because there is a long stretch of dry weather in between rainy seasons.

Why is the first rainfall so important?

It washes away pollutants that have collected since the last rain. This water needs to be filtered as much as possible by landscaping before it goes anywhere else. Usually the next stop for this water is storm drains that empty into oceans. So your landscape can be a very important tool in preventing the buildup of pollutants in local water supplies.

In addition, the first rain in the fall is very important for your plants. New or established plants will want to grow deep roots in the fall and winter, and the additional water is essential. Capturing the rain with your landscape reduces the need for increasing irrigation.

How much water comes off your roof?

Measure the size of your roof to determine how much water will come off it. The shape of your roof doesn’t matter in this instance. The same amount of water falls on the roof whether it is sloped or flat. You can measure a sloped roof either using an aerial view or from the ground without worrying about the slope itself. Just measure the outside edges the same way you would if it was flat and calculate the square footage.

Flat roofs covering a building in one contiguous shape are easier to measure. Some roofs are more complicated. You can divide this type of roof into individual squares or triangles. Then, measure each one at a time and add the figures together for your total roof area.

Calculate your potential water capture

Once you know the total roof area, you can determine the amount of rainfall it generates in gallons, then use the following formula to convert square feet to gallons.

Formula: Rainfall in Inches x Total Square Feet x 0.62 = Gallons of Rainwater from the Roof

Here’s an example using a 1,000 square foot roof: 1 inch of rain x 1000 x 0.62 = 620 gallons.

Even in a dry climate, this rainfall adds up to a lot of water runoff. It’s easy to see how important it is to save as much of this water as possible in a landscape designed to be a sponge instead of a brick. Take the watershed approach to designing your landscape, and you can use the first flush of rain to your advantage.

The San Diego County Water Authority and its partners also offer other resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.

Butterflies and hummingbirds aren't just visually appealing; they also provide a service to your landscape by pollinating plants. Photo: GeorgeB2/Pixabay

Attract Butterflies and Hummingbirds

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Witnessing the quick burst of color that often accompanies a butterfly or hummingbird’s flight is always exciting. It’s even more exciting when you see them in your own garden. Aside from being visually appealing, butterflies and hummingbirds also provide a service to your landscape by helping to pollinate plants. In doing so, they ensure seeds for future generations of plants.

How do you attract these beautiful garden pollinators?

Colorful, tube-shaped flowers located in sunny areas will attract hummingbirds in search of nectar. In Southern California, these tiny pollinators can stay year-round with a steady food supply. To provide this supply, try selecting a variety of plants that will bloom at different intervals throughout the year.

Hummingbirds also like shrubs and trees that provide shade where they can rest or find materials to build nests. Those cool areas are also where they can hunt insects. This can be helpful to your garden as they may eat insects harmful to other plants.

Similarly, butterflies also rely on flowers that provide nectar. They need host plants, which California native plants often are, where they can lay eggs. These eggs will hatch caterpillars, which will need to feed on nearby leaves. If you are concerned about leaves with lots of holes from hungry caterpillars, try strategically placing these plants behind other plants or in the back of your garden.

A good way to plan out where to put certain plants is by mirroring native plant communities.

Some native California plants that attract butterflies and hummingbirds:

  • California Fuchsia
  • Manzanitas
  • Chaparral Currant
  • Narrowleaf Milkweed
  • Sticky Monkeyflower
  • Coyote Mint

By selecting the right types of native plants, your landscape will burst into color!

The Water Authority and its partners also offer other great resources for landscaping upgrades, including tips for sustainable landscaping best practices at SustainableLandscapesSD.org and free WaterSmart classes at WaterSmartSD.org.

How Much Water Do Plants Need?

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It’s important to assess how much water your outdoor plants need to stay healthy. The heat and humidity in San Diego County is far from over, with the official start of Fall September 23. Irrigation needs are generally highest during these warm months.

Did you know that plants can be classified by their water needs?

Landscaping professionals use a resource called the Water Use Classification of Landscape Species, or WUCOLS, to classify plants according how much water they need to thrive.

It might sound complex, but it’s very useful because it breaks down the water requirements for each type of plant. There are four categories: Very Low, Low, Moderate, and High. These water requirements are also called Plant Factors. They are an important tool for transitioning to a more water-efficient landscape. By knowing exactly how much water your plants need, you can cut down on your water usage while also keeping your plants happy.

Calculating water requirements for outdoor plants

To calculate a Plant Factor, compare the plant’s water use to cool season grass in a given climate zone.

Why is that? Turf is among the thirstiest of all types of plants. When you replace turf areas with climate-appropriate plants with lower water requirements, and irrigate them with more efficient systems, you can greatly increase your water efficiency. You don’t have to turn your landscaping into a dry moonscape to do it.

Plant factors, or PF, categories:

Plant Factor categories from high to low water use. Graphic: Water Authority

High: Plants need from 60 to 100 percent of the water needed for a grass lawn (PF of 0.6 – 1.0)

Moderate: Plants need 30 to 60 percent of the water needed for a grass lawn (PF of 0.3 – 0.6)

Low: Plants need 10 to 30 percent of the water needed for a grass lawn (PF of 0.1 – 0.3)

Very Low: Plants need 10 percent or less of the water needed for a grass lawn (PF of less than 0.1)

Group plants by PF to irrigate more efficiently

In the Water Authority’s Sustainable Landscaping guidebook, plant selections are color-coded to identify their water needs under this system. That approach provides an easy way to group plants by their water requirements in your landscape, so you can irrigate more efficiently.

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.