low water landscaping Archives - Christiane Holmquist Landscape Design

A Bench and How It Came to Be

August 3, 2017 By Christiane Holmquist Leave a Comment

The basalt bench in the shade of the Macadamia Nut tree is Gordon’s favorite spot in his garden.

Authors: Christiane Holmquist & Gordon J.
Photography: Emma Almendarez

A recent project amazed me in its rapid flourishing and the joy it brought me and the homeowner. Planting started in early January of this year, and by May the garden was awash in butterflies, birds, and bloom, surprising and delighting us all. The homeowner was so excited that he volunteered to give me his view of our collaboration, and I gladly reprint here his words, with my picture comments:

The garden had “good bones” in the form of expertly pruned mature trees, Variegated Mock Orange and Indian Hawthorn. However, on the ground plane I replaced a tired lawn, Agapanthus and Star Jasmine with colorful, low-water use perennials, succulents and a few exotic and unfussy terrestrial bromeliads Vriesea imperialis. We added boulders for permanence and welcome texture contrast.

A Story of a Bench

“As a homeowner, I always thought that the best project outcomes occurred when there was a strong collaboration between the design professional and the homeowner. To illustrate, here’s the tale of a bench and how it came to be.

The pool was “just there”, and the surrounding planter beds were in need of fresh color.

Me– an elderly gentleman, AKA “the client.”
Christiane Holmquist–AKA Christiane Holmquist Landscape Design

My wife and I bought our home in 1980, which was 3 years old, but totally lacked landscaping. Using design professionals, we landscaped our property–pool, spa, patios, trees, gardens, etc. We planted a wide variety of trees, including a gingko, macadamia nut, bronze loquats, citrus, Chinese fringe trees, paper barks, magnolias, cassias, etc.

To rebuild the old dry stream beds, we repositioned the original feather rocks and incorporated many new boulders, pebbles, and gravel with interesting forms and textures. We added many smaller grasses and “water-side” plants, to imitate a mountain stream as convincingly as possible.

As the decades rolled by, the trees became lovely and mature and, correspondingly, we became mature (80+ and counting) (but lovely would be a real stretch). Therefore, with age, we focused on landscape seniorization–how to enjoy and work in the gardens while also minimizing the risk of falls.

Much needed color invigorates the pool area and weaves throughout the garden.

One small seniorization action was to install large stone steps between a concrete walkway and a dry streambed. It gave access to the area and with the solid steps, the risk of tripping or falling was minimized.

Stone steps ended at the dry stream bed. Wouldn’t it be more satisfying to rest here in the shade of the tree, to view the garden?

Next Steps

Enter Christiane. She observed that the garden had “good bones,” meaning that the mature trees and shrubs anchored the new more modern usage of low water plants and native plant material. However, when it came to the stone steps she said, “You can’t have a walkway without a destination! It needs a bench to sit on across from the streambed.” I noted that the spot she was talking about was just beyond a major branch of the macadamia nut tree that I was likely to bump my head on and the bench would be in deep shade. I nixed the idea.

Christiane and I moved onto other elements of the design project — plant species, availability, etc.

Echeverias nestled into ever-blooming Sundrops Calylophus drummondii and ‘Pink Spice’ Pelargonium ionidiflorum. You will find these plants often in my designs; they are absolutely dependable, easy going and low-water use plants.

Weeks later, Christiane came back to the idea of a bench. She suggested that it be placed in front of the streambed, but still under the canopy of the macadamia nut tree. This time I was able to picture it–a big stone slab resting on two stone pillars that fit two people comfortably. By now I have lots of confidence in Christiane’s judgment and design strength. Also, the masonry people had done a great job building a new wall. So, let’s do it!! In goes the bench. It made the nearby birdbath look out-of-place. So, in goes a large stone birdbath in harmony with the bench.

You will find these plants often in my designs; they are absolutely dependable, easy going and low-water use plants.

The Basalt birdbath add to the aged look of this garden.

Fast Forward a Few Months

The stone bench and birdbath are the feature attractions of the center of the gardens. The bench is my favorite spot. One can watch the butterflies–monarchs, swallowtails, sulphurs–fluttering in the sunlight and the birds– sometimes chirping away, sometimes silent, sometimes bathing–enjoying the yard. The bench is a great place for conversations with others. It’s a great place for visitors to enjoy the gardens. A great place for memories.

Many years and much creativity went into this garden, and various people have shaped it. The bench invites to sit and contemplate its history and present beauty.

Thank you, Christiane, for your insight and your persistence.
Sincerely, Gordon.” (End of quote).

A Brunfelsia in full bloom is a stunning attraction in this entry courtyard.

Heartfelt thanks to you, Gordon; I much enjoyed working with you!

Gordon’s comments reinforce my love of helping homeowners see the strengths and weaknesses of their existing gardens, and of developing landscape design plans for their improvement, while keeping the client preferences in mind. With Gordon’s detailed involvement we found exceptional plants that bring life to “good bones” and produce enjoyment year round while keeping the upkeep to a minimum. A project like this teaches me a lot about gardens and how to make them better; it fuels my work and propels me on … to the next garden.

Verbena bonariensis ‘Lolly Pop’, Geranium sanguineum, Sundrops Calylophus hartwegii, Vriesea imperialis, Daylilies. A few very commendable plants for low-maintenance and low-water needs gardens. And don’t forget boulders!

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A Matter Of Balance: Don’t Allow the Hardscape to Dominate the Planting

March 9, 2016 By Christiane Holmquist 1 Comment

Don’t allow the hardscape to dominate the planting

Part 2

In my last post I endeavored to put plants in the forefront of our gardens in order to make them softer and more welcoming: Under our southern sun pavements, structures and other built structures create glare and very deep shadows. How can we reduce the harshness of this bright white light in residential landscape design?

I think the primordial quality of a well-designed garden is its ability to let our eyes and minds rest. To that effect, I want to employ shade, light-absorbing textures, coolness, perhaps even the sound of water. I try to balance out the hard structures with drought resistant landscaping and let the plants play an equal if not greater role in the organization and feel of the design. Here are a few tricks how to employ plants to that effect:

hard surface balanced with softening plants

This entrance area can be extremely bright, but Redbuds and oaks add a “roof” to the approaching visitor and create shade.

Don’t let too much hardscape take the warmth out of your garden

No massive gate columns here: The framing of this garden entrance is done by the swollen trunks of Floss Silk Tree Ceiba insignia, which also provides shade; the young mimosa in the island has a very soft light-absorbing deep green foliage and will create a wonderful welcoming coolness.

Even in full non-day sun, someone sitting on that bench would be able to admire the cool blue of this beautiful Potato Bush.

Even in full none-day sun, someone sitting on that bench would be able to admire the cool blue of this beautiful Potato Bush.

Here, a low water and low maintenance clumping grass reflects light like an animal’s fur, and the shade of the shrubs beyond is in contrast to the bright patio on the right.

A boulder echoes the horizontal line of the eaves, while grasses repeat the vertical lines of the window frame.

Plants have many roles: They create the visual pleasure that changes through the seasons because of the seasonal bloom, and they offer a juxtaposition of delicate textures with the outlines of strict architecture or rugged boulders. Plants can repeat the dynamic contrast between horizontal and vertical lines already present in the architecture of a house. Leaning pine branches intersect with vertical grass blades, while vertical flower stems stand at a right angle to a boulder’s edge.

These dark bromeliads provide contrast to the lightness of the house’s walls, strappy irises play off of the low horizontal stone wall, and palms throw their interesting shadows on the walls.

Although many “hardscape elements” are used here, plants scale down their proportions and make them soften until they almost disappear. Plants are employed to edge this stone path, and instead of an umbrella or arbor, the tree canopy on the left shelters a bench.

While the stone and wood create light and dark structure, plants soften the overall effect. Even the light-colored pavers are more inviting when edged in grass.

Here, the stone flower beds will start to look less heavy when the vines start to take over the arbor and the perennials and shrubs gain their mature height, cascading over the sides to soften them. While distinctly dividing the side of the house into different areas, each area becomes its own secret garden.

Plants create suspense: Where is the path leading? Your eye bounces down the path from the Aloe to the pink flowering Rock Purslane to the yellow Mexican Marigold. They thus create the illusion of a larger yard.

A minimal structure for vines will soon create much-needed shade, while all around plants absorb some of the light. The purple-flowered tree is a Jacaranda; the white shrub on the left is Iceberg Rose.

Soon, the three Podocarpus trees along the back wall will be tall enough to screen out the neighbor’s house and all boundaries will be obscured, thus creating total privacy in a natural setting.

Plants help to separate this sitting area from the entrance and to make if feel more private.

This design also creates the illusion of distance, giving the front yard a larger feel. The small deciduous shrub will provide more shade and privacy as it matures, and give an excellent opportunity to use creative landscape lighting to add drama at night by revealing its beautiful branch structure.

Instead of walls and doors, planter pockets serve to break up the pavement and to separate one usable area from another.

Getting away from hardscapes is a challenge; there are sexy materials that don’t need watering or maintenance, and will last close to forever. Stone, wood, glass, metal, and even fiberglass or plastic are very versatile and lend themselves to a variety of different uses. Be it fencing or furniture, these materials can help us give places to ‘hang’ our plants, much like in a big wardrobe.

Many landscape architects and landscape designers in San Diego (and elsewhere) have been trained to use these materials as the back-bones and foundations to build around – and upon – with plants in secondary filler roles. But plants can also serve this purpose; let yourself fall in love with the texture and structure of a plant, or your favorite tree, or a color, and design around that.

Tell your designer that this is the plant you want to showcase or use. Say you want a great big hedge of something to serve as a fence. Think about using our native Toyon Heteromeles arbutifolia, or a Silverberry Eleagnus pungens. Both are tough shrubs with attractive foliage, colorful berries (Toyon) and fragrant flowers (Silverberry) that are very undemanding in soil, water or light and that can be sheered, pruned or trained into small trees or an evergreen screen. If you prefer beautiful craftsmanship, think about how a simple perfect circle carved from stone, laid in brick, or made of wood can’t help but stand out best when surrounded by the chaos and asymmetry of plants.

Right now is a great time to look for California natives, drought-tolerant succulents and waterwise perennials, shrubs and trees at your local nurseries!

I believe this is a topic that will interest many gardeners, and I’ll talk about it in greater detail and colorful examples in a presentation at the Water Conservation Garden in El Cajon on June 11, at 9:30 a.m., in a class entitled “Balancing hardscapes with plants”. Look for a detailed description in the coming weeks at the Garden’s website. I’d be happy to greet you there!

Is Your Front Yard the Final Frontier? Conquer Your Home Landscape Design with These Distinctive Exotics

August 29, 2013 By Christiane Homquist Leave a Comment

Vriesea imperialis is a regal presence in this garden. Greene garden, Encinitas

Vriesea imperialis is a regal presence in this landscape. Greene garden, Encinitas

Searching for unique and exceptional plants that could be worthy complements to the striking and curvilinear architecture of a client’s home in Carlsbad, I visited Rancho Soledad Nursery in rural Rancho Santa Fe/CA. This grower specializes in unusual specimens and is responsible for many exciting plant innovations in the plant world.

The plants that I was after would also need to fit other important requirements: They needed to be non-fussy plants, fitting into a home landscape design, and be low water landscape plants.

After describing to Eric, one of the sales managers there, what I was after, he led me to a group of plants that grabbed my fantasy immediately: All had a round form of fleshy, almost leathery leave rosettes reminiscent of a pineapple plant; some had dreamy marbling and textures on their leaves while others stood out by their foliage color. Some would bloom repeatedly, and others would develop majestic flower “inflorescences” that would stand out in any garden for months. What were these, I inquired, and what were their growing requirements?

Vriesea imperialis makes a good companion to other low water plants

Eric explained to me that these subtropical plants were terrestrial bromeliads, relatives of the Pineapple family (Bromeliaceae), native to the Americas from the southern United States all the way to the tip of Argentina, and growing from near sea level up to 14,000 feet. The ones that grow in the open on rocks or in soil are very drought resistant plants. (Other ones called epiphytes grow on trees, and then there’s a genus of bromeliads called Cryptanthus that is not drought tolerant.)

Because of their striking, sometimes spectacular form these bromeliads would make great additions to any modern garden design with their forms ranging from small prickly agave-like plants, to spectacular basal rosettes open to the sky; some have narrow pointy, spiny-toothed leaves, others grow strappy ones like a New Zealand Flax, only with a softer, more arching and less stern appearance.

Vriesea imperialis inflorescence

Some produce drooping clusters of showy bracts and tubular flowers; others send out an upright stalk decorated with the most striking and brightly colored inflorescence that makes a giant focal point in the landscape. All are easy to grow, requiring well-drained soil and only average watering; it is important for water to collect in the cups or center of the rosettes.

Aechmea recurvata, tolerant of full sun with only little water

As the Cactus and Succulents Society of America recommends, “Division of rosettes is the standard method of propagation, though of course new hybrids must be started from seed-it’s fun to plant seeds and see what develops. Some plants cluster very quickly and can give the grower a real problem when it comes time to divide or re-pot them. I recommend a pair of long leather gloves (sometimes sold as “rose-pickers”) and a sharp knife plus some sort of pry-bar. Weeding around them is best done with the “cactus-grabber” (actually a fishhook-disgorger) that most of us who grow spiny plants have bought in self-defense. The plants do not seem to be subject to many pests or diseases, though some from Brazil, as mentioned above, may be sensitive to low temperatures. Many are really beautiful and a great asset in the plant collection. “

Aechmea cv. ‘Prietro’ : Its dark foliage would make an eye-catching contrast to any fleshy or feathery foliage, or a pleasing complement to any orange, red or yellow color.

Bromeliads have great color, ranging from grey to bronze to almost black; other ones sport blades or straps from chartreuse-green to orange to flaming red. Some of them can tolerate bright hot sun (that actually brings out their flaming color) while others ones prefer the shade, perhaps under a canopy of a tree, or even on the northside of a house, under the eaves.

Aechmea comata ‘Lemon Lime’ — more striking and softer than New Zealand Flax

These xeriscape plants are entirely compatible with succulents and other drought resistant plants in low water landscaping. In the design that I was preoccupied with they would make exceptional companions to the other architectural plants, such as the exotic looking Silk Floss Tree Ceiba speciosa and the bold Small Cape Rush Chondropetalum tectorum…

Aechmea blanchettiana. Design by Glorious Gardens, Encinitas

Aechmea blanchettiana makes a fine centerpiece in this succulent arrangement.
Design by Glorious Gardens, Encinitas

Since I have a penchant for extravagance and am always on the look-out for unusual plants, I’m happy that with these Bromeliads I have found a group of plants that will grab anybody’s attention. With their resilience in hot sun or dry shade and their low maintenance or water needs, they seem to fit the sustainable landscape design needs. And with their strong form, their intriguing coloring and exciting textures they make upstanding elements of any landscape design that wants to stand out and hold your attention for a long time.

I’m happy that these plants seem to fit the needs of any lover of plant exotics AND plant lover the bill of any sustainable landscape design and since I have a penchant for extravagance, I’m sure I’ll be using these whenever They fit into my , are tough and beautiful, and that integrate well into the sustainable landscape design. Since they perform so well in tough spaces, hot sun or dry shade, I’m sure to see more of these in my designs and expect them to perform well in difficult places, whether tough hot spots or dry shade.

I’ll describe some of these in the 2^nd part of my post “The eye-catching bromeliad – No tenderfoot in the drought resistant landscape”.

Sources:

You can admire many beautiful terrestrial bromeliads at these locations:

San Diego Botanic Garden, Encinitas.

The Botanical Building (or Lath House) at Balboa Park, San Diego, features many shade loving bromeliads.

Here’s where I photographed most of these bromeliads:

Rancho Soledad Nursery, Rancho Santa Fe, CA

A Glorious Garden Garden and Design Center, Encinitas

Fall is for gardeners – Now’s the time to put your landscape ideas to work

October 4, 2012 By Christiane Homquist Leave a Comment

I imagine that low water landscaping fans here in the south-west share a common tingling sensation in the finger tips these days; the recent harvest moon and the longer nights awakened out plant lust: Without doubt fall is here, and soon we can work outside again without risking a heatstroke.

So what better time to consider our next moves in our low water landscape? On my list the to- do-chores are conveniently intertwined with the to-buy-list:

Replace the plants that haven’t made the mark; there are much better ones available.

In the increasingly hot summers these past years, a number of my drought tolerant plants have been looking sparse, lanky and tired; even when cooler temps set in they didn’t pick up the pace. I’m itching to replace them with tougher plants: Mountain States Wholesale Nursery specializes in desert plant species promised to do better in our climate and soils. Although not ‘a desert’, our climate in San Diego is getting drier, and our occasional ocean winds should be a bonus (salt spray and heavy clay soil excepted – please check on the individual plant’s requirements). Their plants are retailed at Kniffings Discount Nurseries in El Cajon ; (they will order for you what’s not in stock.)

Here a 3 beauties that I’d like to try:

Leucophyllum candidum ‘Thunder Cloud’ Thunder Cloud Texas Sage

An evergreen shrub with compact form, silver foliage, deep purple flowers summer/fall. Blooms repeatedly; needs well drained soil.

SIZE (H X W) 3 feet x 3-4 feet

WATER Low

GROWTH RATE Slow

HARDINESS 10º F, USDA Zone 7

PRUNING : Shear in late spring if at all

Hesperaloe parviflora ‘Perpa’ Brakelights Yed Yucca

Red Yucca Brakelights has vivid red flowers from Sept. to June that attract hummingbirds; it’s a compact grower with narrow, leathery, blue-green leaves. This tough, low maintenance native to Texas and Northern Mexico thrives in full sun and reflected heat; good specimen container plant, suitable for a wide range of climates and soils.

SIZE (H X W) 2 feet x 2 feet

WATER Low

GROWTH RATE Slow

HARDINESS -20º F, USDA Zone 5

PRUNING Remove old flowers

Desert Willow Lucretia Hamilton Chilopsis lineraris ‘Lucretia Hamilton’

The natural form of this deciduous tree is multi-trunked with a graceful, weeping appearance with long, narrow leaves and attractive burgundy trumpet-shaped, orchid-like flowers. Blooms appear in terminal clusters from May through October. The resulting seedpods cling on branches throughout winter. After flowering, long narrow seed pods are produced.

SIZE (H X W) 18-20 feet x 18-20 feet

WATER Low

GROWTH RATE Moderate

HARDINESS -10º F, USDA Zone 6

PRUNING Prune to shape

And now to my to-do-list:

On the very top of my to-do list is “Renew landscape mulch”

My layer of mulch has thinned considerably over the last season, and it’s time to replenish it – benefits will show in a few weeks.

Here’s what mulching does;

Mulch will reduce the amount of water that evaporates from soil, greatly reducing the need to water.
Mulch improves the quality of your soil by breaking up clay and allowing better water and air movement through the soil.
Mulch provides nutrients to sandy soil and improves its ability to hold water.
Mulch acts as an insulating layer on top of soil, keeping it cooler in the summer.
Mulch keeps weeds down, and the weeds that do grow are much easier to pull.

Mulch like you mean it;

Before applying mulch, remove weeds and water thoroughly.
Replace the grass under trees with mulch, to mimic the way trees grow in nature.
Keep mulch 6-to-12 inches away from the base of trees and shrubs.
Apply 2-to-4 inches of mulch in all planting areas. Finer mulches (sized a half-inch or smaller) should be applied no more than 2 inches deep. Courser mulches, such as large bark chips, can be applied 4 inches deep.

Shopping for Mulch

Mulch is available by the bag or in bulk. Bulk mulch is measured in cubic yards. You can calculate the volume of mulch you need by multiplying the area (in square feet) by the depth (fraction of foot, not inches), then dividing by 27.

Here’s a link to FAQ about mulch that holds a table that will guide your calculations: http://www.agriserviceinc.com/faq.html

Here are links to more providers of mulches, top soils, amendments:

El Corazon Compost Facility (AgriService), Oceanside.

San Diego Landfill, San Diego (some products are is free for SD residents) .

For the County of San Diego, for locations to recycle your green yard debris and woody material or to pick up compost and/or mulch consult the Compost and Mulch Facilities Guide.

My take on maintenance: Cut down on it.

Garden maintenance may occasionally be tedious, but most of the time it’s simply gardening, and that’s what many of us love to do.

Be confident: a garden is rarely finished.

It’s the journey that counts. You might have a very special micro climate formed by the special building materials of your home, or the particular accumulation of decomposed granite or boulders or sediment soil…

Gardens are not static.

We just don’t have control over climate, or over the individual plants.

Shy away from things that cause frustration:

– Shrubs and trees that outgrow their space ;

– Plants that need better drainage than your soil can provide;

– Flowers that are unsightly after flowering, that are susceptible to diseases or flower only for a short time (f.e. Hybrid Tea roses)

Choose low maintenance plant:

They demand very little but will pay you back with permanent interest from their beautiful structure and exceptional texture:

Agaves
Foliage plants such as the stunning Safari Sunset Conebush Leucadendron ‘Safari Sunset‘, terrestrial bromeliads (see Rancho Soledad Nursery, Rancho Santa Fe, for their great collection of Aechmeas, Vrieseas, Dyckias and more; many of these with very low water needs)
Perennials grasses (f.e. the beautiful Melinis nerviglumis Ruby Grass )
Succulents such as low-growing Graptopetalum or Sedums
Crimson Grey Geranium (also called Kalwerbossie Geranium)

Employ the permanent colors from hardscape – that’s a no-maintenance garden:

colored concrete, flagstones, DG (decomposed granite)
attractive gravels & boulders
glass and concrete balls
attractive furniture
colorful containers
garden art
shade sails
pillow and cushions, umbrellas

Are you getting anxious yet to get outside and let your creativity flow? Shape your garden, enjoy the changing season, experiment? I’m sure you have many landscaping ideas of your own. Enjoy this season; soon the winter rains will help us establish our new plantings and will reward us with new growth and even bloom – the year in the drought resistant landscaping is long from over.

Hot tropicals on a water budget – xeriscape landscaping with brilliant color

June 22, 2012 By Christiane Homquist Leave a Comment

Bright summer light washes out the colors in the drought tolerant landscape

Bright intense light and June haze over drought tolerant landscape

What comes to your mind when you hear the term ‘xeriscape landscaping’? Drab, color-less expanses of thin blades, sharp spines, gravel and dusty mulch? Blue-gray foliage with some pale shriveled-up flowers?

I exaggerate of course. But have you noticed how in our lovely county, when it’s summer in earnest, and especially around noon, many plants seem to “hold their breath”? Their colors look faded and washed out in the glaring sunlight; some stop blooming, curl their foliage or actually shed it. In my garden, my very controlled watering régime is only half to blame (after all, I’m gardening with drought tolerant plants); for many of my Mediterranean plants it’s summer dormancy, their genetic response to the intense light, extended drought and heat.

So I was excited when I got an invitation from Waterwise Botanicals in Bonsall to visit their growing grounds: Tom Jesch introduced us to some traditionally considered “tropical” plants with their expected attributes: Lush foliage, glossy leaves and brilliant, intense color, but that perform, with clever irrigation practices, like drought resistant plants: After planting, you water deeply and then repeat the cycle on the same day or the day after. Re-water about 10 days later (or earlier, depending on how much water your soil retains). When the establishment phase is over (usually 6-9 months), you can stretch the period between waterings to greater lengths (again, this depends on how well drained your soil is or how much water your soil can hold; a good amount of organic matter increases its water holding capacity…)

If you are looking for some strikingly colorful additions to your low water landscaping, check these plants out. I, too, look forward to incorporating them into my landscape designs:

Royal Queen Pereskia grandiflora violacea drought tolerant tropical shrub

Royal Queen Pereskia grandiflora violacea gives a punch of color to the xeriscape design

Royal Queen is an attractive answer to our water crisis. With glossy evergreen foliage (that hides its thorns – it’s in the cactus family after all) and clusters of orchid-like purple flowers from late spring to fall, this shrub lends our low water landscaping a colorful and “royal” touch. It likes regular watering but is equally tough in dry conditions, partial or full sun. It’s partially deciduous in winter and tender to freezing temperatures.

Uses: With its size of 3 to 4 ft in height and width, I’d use it as center of a flower bed design, as specimen, (in winter, when it’s partially deciduous, I’d distract from it with other green or flowering plants); or I’d use it in mass plantings where its sparser look in winter is not a problem. I’d also use it in a container if it can be rolled out of sight in winter.

Variegated Brazilian Skyflower Duranta repens variegata as tropical addition to xeriscape designs

The Variegated Brazilian Sky Flower Duranta repens variegata lends a tropical touch

Shiny leaves with bright green and cream variegation, drooping clusters of lavender blossoms in spring to summer make the Brazilian Skyflower an attractive large shrub that grows to 12 – 15 ft tall by 8 ft wide but can also be trained into a small tree. It thrives in the heat, sun or part sun. It needs regular water (as in every 10 days or so), and it’s hardy to the high 20’s. A note to gardeners with children: This plant produces yellow berry-like fruits (the plant is also called “Pigeon Berry”) that are toxic if ingested.

Uses: I’d use it as screen, or train it into a small attractive evergreen patio or container tree.

I’m excited to have found more plants that are suitable for the drought resistant landscaping, and I look forward to using these when I need to give my xeriscape designs more punch. And there are quite a few more to cover – look for them in my next post.

Xeriscape Design Explained

January 20, 2012 By Christiane Holmquist Leave a Comment

As a landscape designer in San Diego County, one of my greatest concerns when approaching a new project is water usage. We live in a desert region and have experienced years of drought. As the population of our state continues to grow, our limited water resources will become more and more strained.

One of the ways we can cut back on water usage is with Xeriscape designs.

Xeriscape is a landscape design method that focuses on reducing water usage. This can be accomplished by planting climate-friendly, water-efficient plants, updating to more efficient irrigation methods, putting down water-trapping mulch and more.

Xeriscape is a very high priority for me. I believe in planting for the existing environment, not in spite of it. It is painful to see some homeowners and institutions who insist on creating lush, water-gulping gardens that need constant care in order to survive a harsh environment, especially when there are plenty of beautiful, healthy plants that can thrive with much less water.

Fortunately, many homeowners are beginning to make water conservation a priority. For these homeowners, low water landscaping can provide a beautiful result, cut back significantly on water usage and save water costs each month. Along with proper selection and placement of plants, xeriscapes can also significantly reduce maintenance expense.

There is no singular strategy behind creating a xeriscape design. Rather, there are many different tactics that can be applied depending on the homeowner’s goal, design tastes and the specific features of their yard.

Here are some common xeriscape tactics:

Drought-Resistant Plants: Use climate-friendly plants – California natives or plants from other Mediterranean climates. There is an incredible array of plants that thrive in Southern California’s dry environment.
Soil-Plant Balance: Soil has a lot of do with water capture and retention. In a xeriscape, we use plants that match the characteristics of the soil. In some cases it’s advisable to improve the soil characteristics.
Mulch: Mulch allows water to percolate into the soil beneath, shades the soil and helps keep plant roots moist and cool; it improves soil structure for better nutrient and water retention. Mulch can be made from wood chips, plant grindings, gravel, rocks and many other substances, making it a versatile material that can complement different landscape designs.
Efficient Irrigation: There are a variety of irrigation methods that can improve water utility. Personally, I recommend drip irrigation, a process where water is fed directly to each plant rather than sprayed across a wide area. Other water-saving irrigation methods include adjusting sprinklers each season or installing rain sensors that shut down sprinklers during or after rain. There are also automated irrigation controllers available that tap into state-wide climate data and calculate the necessary amount of irrigation water.
Plant-Zone Balance: Every yard includes zones where the sun and shade differ throughout the day. As a designer, I like to map out these different “hydrozones” and recommend plants that prefer those specific environments. For instance, I would recommend sun-loving drought-tolerant plants for areas of the yard that get a lot of sun and heat during the day.

All-in-all, xeriscaping is an important part of what I do as a landscape designer. It feels good to put together gardens and yard designs that honor Southern California’s dry environment and help protect our precious water resources.

DIY tips for a pretty, low water landscape: Resolve, muscle power and a love of plants (City rebates come handy)

October 31, 2011 By Christiane Holmquist 2 Comments

Lawn-centric front garden a true zero-scape

A traditional "zero-scape"

Congratulations to Jeanie and Lee in Scripps Ranch, for their resolve and their love of plants. Going from a lawn-centered “zero-scape” to a garden alive with xeriscape plants with beautiful colors and textures, and doing this with their own landscape ideas and muscle power demands respect.

Hoping to qualify for San Diego’s rebates for turfgrass removal and the installation of a micro-irrigation system, they discussed the how-to with a City inspector and put a design together. Here’s where Jeanie called me in to review her design and desired plants.

Lawn gone

Assessing soil, micro-climate and the slightly sloping terrain I found that her wish list had excellent “bones” in it that needed few adjustments.

Almost finished

The permanent features to remain were the concrete turf edge, the edged planter beds and the palm trees (they would have their own irrigation). I recommended importing several large boulders which would help “ground” the landscape.

To add volume where the palm trees are only accents I suggested a couple of small trees, on both sides of the house; here Jeanie chose 2 ‘Catawba’ Crape Myrtles, one of them a multi-trunk specimen.

As we were fine-tuning her design and discussed longer-blooming low maintenance plants, Jeanie said that she likes to garden and is not averse to some maintenance, such as deadheading the Early Sunrise Coreopsis periodically to encourage new bloom.

Early Sunrise Coreopsis

I explained that Gazania would not be attractive long enough during the seasons. Instead I suggested Ghost Plant Graptopetalum paraguayense, an elegant, slowly spreading succulent whose grey-pinkish rosettes would make a pleasing connection with Coreopsis, Walker’s Low Catmint and Gaura, all on Jeanie’s list of favorites.

Catmint Walker's Low

Ghost Plant

For a captivating contrast to the frilly perennials we added several Foxtail Agave A. attenuata and ornamental grasses; for me the grasses are matchless in adding a relaxed and naturalistic, almost mysterious feeling to the landscape. Here Jeanie picked a short Purple Fountain-grass variety in a local nursery.

Purple fountain grass is a drought tolerant ornamental grass

Airy Purple Fountain Grass

Complimenting the drought resistant plants would be a Dwarf Yaupon Ilex vomitoria ‘Nana’ that I hadn’t used myself. My research showed that it might need a bit more water than the other plants, but Jeanie wanted to give it a try. This shrub, at 3-5 ft high/wide, develops a refined, attractive appearance with careful pruning – a task that she looks forward to.

Completed

And the cost? Jeanie and Lee invested about $3,200 on materials plus $1,200 on labor to help Lee; the rebates should amount to about $1,070. Not bad for a diy landscape that can save them 60 to 70% water and is so pleasing to look at. As one of their friends exclaimed who came by and admired their achievement: “This front yard is so much alive!”

Read about the City’s rebate program: http://www.sandiego.gov/water/conservation/residentialoutdoor.shtml

A Story of a Bench

Next Steps

Fast Forward a Few Months

Don’t allow the hardscape to dominate the planting

Part 2

Christiane Holmquist

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