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Capture as much rainfall runoff as you can and put it to use as landscape irrigation. Photo: StevePB/Creative Commons rainfall as resoure

Rainwater as a Resource for Your Landscaping

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During the rainy season, runoff from hard surfaces around the home such as roofs and patios can be directed to the permeable landscaping. By capturing as much rainwater as possible in the soil, it is possible to build an ecosystem that can last through the summer months with minimal additional irrigation.  

The entire built environment can be re-imagined and transformed into a living sponge. If more rain falls than can be absorbed, or if the soil is particularly impermeable, rainwater can be directed through landscaped areas to remove pollutants before it flows downstream. 

Adjusting systems to maximize rainwater capture

There are three basic steps to capturing rainwater. First, check your roof to determine where precipitation is directed after it hits the surface — whether into rain gutters, off the edge, or elsewhere. Second, choose how and where to hold excess rainwater based on this assessment. Last, consider making upgrades such as adding rain barrels or making changes in your landscaping. For instance, landscaping soil may need amendments to hold more water. 

Is your soil more like a brick or a sponge? 

If your soil is more like a brick, it will affect how landscaping is contoured to capture water. Adding soil amendments will help it become more like a sponge that retains water for drier weeks and month. If the soil doesn’t drain well, take special care to avoid drowning new plants. 

When choosing landscaping plants, match them to the soil type. If the soil is sandy, look for plants with “dry feet” that prefer free-draining soil, If the soil is harder clay, look for plants that do not mind heavy soil.

Optimal landscape soil can capture rainwater and allow it to soak in completely in 24 to 48 hours.  

Many homeowners also use rain barrels to capture rainfall before it reaches the ground so it can be released during dry times. For more information about rain barrels, go to WaterSmartSD.org for information about purchase, rebates, and a one-minute video guide to installation.

 

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. 

 

 

‘Women in Water’ Conference Aims to Expand Career Options

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It boils down to bringing more women into the water and wastewater industry.

That’s the central message from organizers of the second annual Women in Water – Exploring Career Pathways conference set for Jan. 17 at the Center for Water Studies at Cuyamaca College in El Cajon. Registration for the day-long series of workshops and panel discussions is open through Jan. 15.

Sandy Kerl, deputy general manager of the San Diego County Water Authority, will be the keynote speaker. Speakers also include Cari Dale, water utilities director for the City of Oceanside; Vicki Quiram, general manager of the Carlsbad Municipal Water District; Tish Berge, general manager of the Sweetwater Authority; and Lan Wiborg, deputy director of long-range planning and water resources for the City of San Diego.

The Center for Water Studies is working with the National Science Foundation to boost the number of women entering the industry, and Women in Water is among its initiatives. Target audiences include women contemplating a career change; women in the water and wastewater industry looking to advance their careers; military veterans transitioning to civilian life; and high school girls seeking to learn more about career opportunities as they near graduation.

Pending retirements offer opportunities

An unprecedented number of retiring workers in the next few years opens the opportunity to recruit new talent to the water industry. Photo: Cuyamaca College

“The local water industry is anticipating losing between 1,200 and 1,400 people in critical jobs in the coming years because of pending retirements, which provides a tremendous opportunity to further diversify our workforce,” said Don Jones, a conference coordinator. “Anyone interested in a good-paying career that is making a difference in people’s lives might want to consider registering for Women in Water.”

Conference supporters include the Water Authority, the California-Nevada Section of the American Water Works Association, the California Water Environment Association, and the Association of California Water Agencies. Lunch, refreshments and parking are included in the $25 registration fee. Students are free. Cuyamaca College is at 900 Rancho San Diego Parkway, El Cajon.

 

 

 

 

Overwatering-drought-landscaping-Conservation Corner

Does Your Landscaping Need Water?

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Before adding irrigation to landscaping, make sure it’s needed. Appearances can be misleading, and cause water to be used unnecessarily. 

First, use “digital” technology. Because soil may appear dry on the surface, stick your finger into the soil and see if the soil is wet beneath the surface. If the soil is moist up to your second knuckle, it doesn’t need any more water. Wait for another 24 to 48 hours, and check the soil again. 

As an alternative, use a soil probe and measure the moisture in the soil to determine whether the soil needs more water.  

Another strategy is to assess plant health. How vibrant are they? This can be tricky, because sometimes the signs of overwatering and underwatering will produce similar results in plants.  

Underwatering symptoms include: 

  • Soil is bone dry 
  • Older leaves turn yellow or brown, and drop off 
  • Leaves are wilted 
  • Leaves curl and become brittle 
  • Stunted plant growth

Overwatering symptoms include: 

  • Soil is constantly saturated and soggy 
  • Leaves turn a lighter shade of green, or turn yellow 
  • Younger plant shoots wilt 
  • Leaves are green and brittle 
  • Algae and mushrooms are in the soil 
  • Growth is excessive 

Since the symptoms at both extremes can be similar, it’s best to rely on objective measurements rather than observations. Using simple measurement tools can help ensure the correct amount of irrigation takes place without withholding needed moisture, but without overwatering and wasting resources.  

 

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. 

 

 

Maximize your landscaping soil's ability to retain and save rainfall and irrigation for drier days. Photo: D. Douk/Creative Commons

Building a Water Savings Account

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Managing water wisely in a landscape is a lot like managing a bank savings account.  

Approximately half of the water spent by average California homes is used outdoors, mostly for irrigation. Unfortunately, up to half of commercial and residential irrigation water is squandered by evaporation, wind, improper system design, or overwatering, according to the U.S. Environmental Protection Agency.  

Using landscape irrigation efficiently can significantly reduce overall household water consumption while leaving adequate water in the ground to cover your plants’ needs. 

During the winter in metropolitan San Diego County, healthy soil can absorb water in surprisingly large quantities to be released slowly to plants as they use it during drier months – like using a savings account to pay for expenses over time.  

That’s particularly true during wet spells like we’ve had in late November and early December 2018; no need to spend irrigation water when Mother Nature is making the deposits for you. 

Balance your water bank account 

Water that enters the soil as rain or irrigation is like a deposit into a soil checking account.  

By keeping track of those transactions of water in and water out, it is possible to know how much water in the soil “reservoir” is available in the landscape at any given time for the plants to access. 

The initial soil bank balance is determined by direct observation or is assessed after a thorough wetting of the soil by irrigation or winter rains. Every day, plants take small amounts of water from the soil. Rain and irrigation fill up the water bank again. The trick is to make sure this “account” does not get overdrawn. 

How can you tell when the account is depleted? Smart irrigation controllers and landscape professionals can calculate this for you. You can also rely on a soil probe, or even testing the landscape by feeling the soil surface with your fingers. 

 

When oxygen and water are balanced in the soil, the amount of water lost through evapotranspiration is similar to paying fees on your savings account. Shading the soil surface with plant materials and mulch protects water in the soil by slowing evapotranspiration and leaving more water in your soil’s account. 

 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. 

 

 

Give new landscaping plants plenty of room to grow and thrive. Photo: Water Authority

Give New Landscape Plants Space To Grow

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When choosing plants for new sustainable landscapes, it’s important to account for the height and the width of each plant species when it matures. This allows you to properly space plants in the landscape without having them feel crowded.  

Proper plant placement, taking into account the mature plant’s size, also should limit the need for future pruning, and reduce the amount of maintenance required in the long run. 

Natural plant shapes and sizes maximize habitat value, but wildfire prevention requires regular pruning and removal of dead plant materials.  

The spacing chart below helps to judge how many plants are needed per square foot, based on the mature size of the plants.  

Space plants on your landscaping plan at their full mature size, not the size when you first plant them. Graphic: Water Authority

Space plants on your landscaping plan at their full mature size, not the size when you first plant them. Graphic: Water Authority

Scale your plants at maturity 

On your landscaping plan, use circles to note the size of every plant at maturity using a scale in which one inch equals four feet. Use colored pencils to note different water needs of the plants selected. It will make it easier to group plants into their proper irrigation zones (hydrozones).

Wide canopy trees that grow to 20 or 30 feet in diameter will significantly change the landscaping over time. Consider whether a tree will cover a large section of landscaping with shade that is currently getting full sun. If plants that thrive in full sun are eventually covered in shade, the landscaping may need to be revised in the future.  

Small but mighty 

Select the smallest, healthiest plants possible, especially when choosing native plants. Once they are planted in properly prepared soil and watered wisely, small plants establish themselves more vigorously than plants raised in larger containers. Do not plant more than the space allows when the plants mature. 

Root depth matters 

Take note of the root depth of plants when they are placed into the landscaping. Note root depths on your landscape plan. Trees will be irrigated less frequently, but for a longer period of time. Groundcovers with shallower roots require more frequent, shorter periods of irrigation. Keep these types of plants in separate hydrozones.  

 

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.    

 

 

  

Mirroring Native Plant Communities in Sustainable Landscaping

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In nature, plants arrange themselves into communities of “friends” based on common microclimates, water and nutrient needs, and how they interact with the physical environment. Native plant communities also are based on interactions with each other and other species such as insects, birds, and other animals.

Most plant communities occur repeatedly in natural landscapes under similar conditions.

Local native plant communities have evolved together over a long period of time, and grow well together. They will even “reject” the outsiders and work together to compete for nutrients, sunlight, and other resources

This is one of many good reasons to learn about the San Diego region’s native plant communities and to select plants that like to live together in communities for sustainable landscaping.

Three examples of San Diego regional plant communities

California Coastal Prairie Community

California Coastal Prairie along the coast north of Jenner, California. Photo: Wikimedia/Creative Commons

California’s coastal prairies are the most diverse of any grassland in North America. Perennial flowers outnumber grass species here. Plants include: California Poppy (Eschscholzia californica), Blue-Eyed Grass (Sisyrinchium), Fern Leaf Yarrow (Achillea ‘Moonshine’), Seaside Daisy (Erigeron glaucus), and Cliff Buckwheat (Eriogonum parvifolium)

California Coastal Sage Scrub Community

California Coastal Sage Scrub in the San Pasqual area. Photo: Barbara Kus, USGS/Creative Commons

California Coastal Sage Scrub in the San Pasqual area. Photo: Barbara Kus, USGS/Creative Commons

California coastal sage scrub features fire-adapted, drought deciduous plants, which are rapidly disappearing to urbanization in southern California. Fortunately, some areas, including the San Diego Safari Park Biodiversity Reserve, have been conserved. Plants include: grey musk sage (Salvia Pozo Blue), sticky monkeyflower (Diplacus aurantiaus), San Diego sage (salvia munzia), fuschia gooseberry (Ribes speciosum), and woolly bluecurls (Trichostema lanatum)

California Chaparral Community

California Chaparral near the University of California, San Diego. Photo: UCSD/Creative Commons

Chaparral exists in many coastal ranges, and on the western and eastern slopes of the southern California mountains. It is ‘hard’ brush that doesn’t rely as much on summer fog as the Coastal Sage Scrub does, and it is adapted to heat and drought. Plants include desert mallow (Sphaeralcea ambigua), bent grass (Agorstis pailens), San Diego mountain mahogany (Cercocarpus minutiflorus), bush poppy (Dendromeconi riguda), and clumping wild rye (Leymus condensatus),

 

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.

 

 

Homeowners learn through the Water Authority's Landscape Transformation program that sustainable landscaping can be as lush as a lawn. Photo Water Authority turf

Tearing Out the Turf: 1 Million Square Feet Targeted for Removal

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San Diego County residents have targeted more than 1 million square feet of turf grass for replacement with WaterSmart landscaping through free landscape makeover classes sponsored by the San Diego County Water Authority over the past five years.

While not all the targeted turf has actually been removed, post-class surveys show that many participants end up taking out more turf than they initially planned after seeing the benefits of their work, said Joni German, who coordinates the Water Authority’s award-winning WaterSmart Landscape Makeover Series.

“Because we give people the skills and the confidence to do this, they often go on to convert turf in another part of their yard,” she said.

Water savings potential tops 36 million gallons a year

The Water Authority's Landscape Transformation Program teaches homeowners the proper methods for removing turf. Photo: Water Authority

The Water Authority’s WaterSmart Landscape Makeover Series teaches homeowners the proper methods for removing turf. Photo: Water Authority

In the past five years, 947 people have completed the WaterSmart class series, which includes identifying turf areas for replacement with low-water use landscaping. Participants work one-on-one with local landscape architects to complete design and irrigation plans.

The Water Authority then compares estimated total water use for each homeowner before attending the four-class series, and after implementing a sustainable landscaping plan. In total, participants have identified more than 1 million square feet for conversion.

“We have documented about a 33 percent water savings in those plans,” said German. “The total water savings realized from removing 1 million square feet of turf is equal to 36.5 million gallons per year, or 112 acre-feet annually.”

One acre-foot is approximately 326,000 gallons, roughly enough to serve 2.5 typical Southern California families of four for a year.

Education helps homeowners embrace change

Example of a Landscape Transformation Program participant's yard prior to its sustainable makeover. Photo: Water Authority

Example of a WaterSmart Landscape Makeover Series participant’s yard prior to its sustainable makeover. Photo: Water Authority

The National Resources Defense Council said California homeowners are leading the transition away from lawns, which is expected to continue for more than a decade nationwide. And there is a long way to go: Lawns currently cover up to 50 million acres of land in the United States, consuming three trillion gallons of water each year, according to NRDC.

German said WaterSmart landscape makeover courses help homeowners change their thinking, and embrace the sustainable landscaping approach.

The same residence after its makeover to a sustainable landscape design. Photo: Water Authority

“Homeowners don’t know where to start,” said German. “They think they have to create a rocks and cactus landscape. Our program reflects a WaterSmart landscape for the San Diego lifestyle.

“In the course, we explain that we live in one of the most desirable climates on earth. People come and vacation here for our climate. We deserve beautiful, lush, colorful, thriving landscapes – and we can have them. They can be water-efficient, too,” said German.

German said the combination of course lectures, hands-on assignments, and support from landscaping professionals makes the classes highly practical. “We get participants to think about their lifestyle and take them down the path that gives them the skills and knowledge to actually implement their own landscape plan.”

Each class series is limited to 25 participants. Experts visit each homeowner’s proposed project area prior to the first class. They take measurements, locate irrigation heads, and produce a CAD drawing for homeowners to use in the class.

“With the help of local landscape professionals, homeowners create planting plans and irrigation plans specific to their project areas. They are either ready to implement the plans themselves, or work with a contractor to tell them what they want done,” said German.

Applications now open for 2019 courses

The Oberkamp home before its landscaping makeover. Photo: Water Authority

The Oberkamp home before its landscaping makeover. Photo: Water Authority

The Water Authority has scheduled a full calendar of WaterSmart Landscape Makeover Classes for 2019, with the first series starting in February in Fallbrook. Limited enrollment ensures every participant receives hands-on support. Homeowners who want to attend a course in 2019 should complete an online application and get on the waiting list. Apply at WaterSmartSD.org.

The Oberkamp home after its landscaping makeover. Photo: Water Authority

The California Department of Water Resources funds the class series because it generates water savings. It also generates a lot of enthusiasm, according to participant reviews.  “Could not believe the amount of information and guidance. Worth every minute and highly recommended!” said one participant.

“Wonderful class!” said another. “The instructors, the workbook and resources are beyond belief. I still have a lot to learn, but I will definitely be implementing everything.”

 

 

 

 

Everett’s California Fuchhia is an example of a plant that doesn't like to have wet feet, meaning roots sitting in water. Photo: Wikimedia Commons

Plants With Wet Feet and Dry Feet

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Plants and people have similar likes and dislikes when it comes to their feet.  

Of course, plants don’t literally have the kind of feet that take them on a stroll, but a plant’s roots are often referred to as “feet.” Just like most people enjoy a walk along the beach or wading in a pool on a hot day, plants like – and need – water on their roots to thrive.  

And just like people don’t like soggy feet in wet socks, plants don’t generally thrive with their roots in standing water. Horticulturists refer to plant roots in soggy soil as “wet feet.” Conversely, plants that can thrive without much water on their roots are said to have “dry feet.”

Excessive moisture at the roots can cause rot and other diseases; very few plants grow in wet areas. While that isn’t a common problem in the arid Southwest, plants can end up in standing water in poorly drained (or over-irrigated) areas of landscaping.  

That means it’s important to match landscaping plants to the environment of their feet.  

Five recommended plants compatible with wet feet 

The California Native Iris (Iris douglasiaria) is a plant that doesn't mind having "wet feet," or damp roots. Photo: Wikimedia Commons wet feet

The California Native Iris (Iris douglasiaria) is a plant that doesn’t mind having “wet feet,” or damp roots. Photo: Wikimedia Commons

  • Coyote Mint (Mondarella villosa) 
  • California Gray Rush (Junous patens) 
  • Joaquin Sunflower (Bidena laevis) 
  • Deer Grass (Muhlenbergia rigens) 
  • California Native Iris (Iris douglasiaria) 

Five recommended plants incompatible with wet feet  

Everett’s California Fuchhia is an example of a plant that doesn't like to have wet feet, meaning roots sitting in water. Photo: Wikimedia Commons

Everett’s California Fuchhia is an example of a plant that doesn’t like to have wet feet, meaning roots sitting in water. Photo: Wikimedia Commons

  • Bluff California Lilac (Ceanothus maritmus) 
  • Everett’s California Fuschia (Epilobium canum) 
  • Sunset Manzanita (Arctostaphylos Sunset) 
  • Hairy Awn Muhly (Muhlerbergia capillans) 
  • Blonde Ambition Blue Grama (Boutelous gracilis)

Get advice from the local garden center or horticulturalists familiar with your area for other good choices.   

 

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.    

 

 

  

Your plant choices should be governed by the individual hydrozones in your landscaping. Photo: Kelly M. Grow/ California Department of Water Resources

Playing by the Hydrozone Landscaping Rules

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Hydrozones are the different areas of your landscape with different irrigation needs. These needs can vary greatly in a single yard. By managing your water distribution to meet the needs of each hydrozone, you can minimize water waste and promote healthy plants.

For example, plants with similar growing requirements including water needs should be planned and planted together so water can be applied as efficiently as possible through rainwater catchment, supplemented by irrigation. 

The amount of sunlight and shade, temperature differences, soil conditions, slopes, and plant root depth should be considered, along with plant water needs, to create hydrozones. Even when the soil is the same, a full sun area is one hydrozone, full shade areas are another, and mixed exposure areas create yet a third zone.  

Within your irrigation system, each individual irrigation valve should water a separate hydrozone populated by plants with similar water needs, living conditions, and root depths. Plants with high water needs such as vegetables or lawns must be on their own hydrozone. Sprinklers or emitters on this zone shouldn’t water anything else, including hardscape areas such as sidewalks.  

Don’t overdo it with irrigation 

 Each hydrozone should have sprinklers or emitters generating the same amount of water, and they should be spaced out so that every plant in the zone gets the same amount of water. If the spray of two sprinklers overlap, plants receiving water from both will receive much more water than they need. In cases like this, sprinklers should be turned away from each other, or placed farther apart. Professional landscapers call this “matched precipitation.”   

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.

The San Diego County Water Authority won two first place awards and a second place award for its communication efforts from the San Diego Press Club.

Water Authority’s Outreach Efforts Honored

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The San Diego County Water Authority received two first place awards and a second place award for its public outreach and education at the 2018 San Diego Press Club’s 45th annual Excellence in Journalism Awards. The event took place at the Jacobs Center for Neighborhood Innovation’s Joe and Vi Jacobs Community Center on October 30.

San Diego’s finest reporters, photographers, writers, artists, and communicators were honored with the region’s top awards.

(L to R) Dennis Cushman, Assistant General Manager; Denise Vedder, Public Outreach and Conservation Director; and Mike Lee, Public Outreach and Conservation, accept their San Diego Press Club Journalism Awards. Photo: Water Authority

Left to right: Water Authority Assistant General Manager Dennis Cushman, Public Outreach and Conservation Director Denise Vedder, and Public Affairs Supervisor Mike Lee accepted the agency’s San Diego Press Club awards on Oct. 30. Photo: Water Authority

The Water Authority received the following Press Club awards:

Websites, Public Service or Consumer Advocacy Site: First Place, Water News Network

Websites, Blog by Corporation or Group: Second Place, Water News Network

Public Relations and Trade Publications, Annual Report: First Place for the 2017 Annual Report titled Pioneering. Visionary. Agile. Driven.

“The San Diego Press Club Excellence in Journalism awards shows that solid research, writing, reporting and photography matter more than ever,” said Kristen Castillo, 2018 Press Club president. “I’m proud our organization honors student and professional journalists and public relations professionals in San Diego.”

The San Diego Press Club’s journalism awards program is among the largest regional competitions of its kind in the nation. A total of 478 awards were presented in 188 categories, with a record number of entries. Press Club officials say entries continue to be robust from a diverse array of media and public relations professionals.

Judges included members of press clubs in San Francisco, Los Angeles, New Orleans, Rochester, Florida, Cleveland, Orange County, Milwaukee, Tulsa and Alaska.

Water News Network receives Award of Merit

Earlier this month, the Water Authority’s Water News Network received an Award of Merit for External Websites at the 26th annual Edward L. Bernays Mark of Excellence Awards ceremony on October 25, hosted by the San Diego/Imperial Counties Chapter of the Public Relations Society of America.

“As communication pros, we spend most of our time highlighting our clients and executives. The Bernays Awards are a unique opportunity for our fellow professionals to be recognized for all of their contributions and tremendous efforts,” said Jenny Corsey, chapter president.

Named after Edward L. Bernays, the “father of public relations,” the awards were open to all agencies and organizations in San Diego and Imperial Counties. They recognize excellence in public relations campaigns and tactics in a range of categories including media relations, community relations and public affairs. Members of the West Michigan PRSA Chapter judged all award entries.