Christiane Holmquist Landscape Design

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The lawn needs to go – but what then? Water Conservation Issues and Garden Re-do addressed at “The Garden”

March 24, 2011 By Christiane Holmquist

boulder scene in late afternoon with succulents and drought tolerant shrubsrelaxing chair under tree amongst grasses and perennials

Prompted by the rising water cost and irrigation restrictions, San Diego homeowners consult the many resources available the Water Conservation Garden in El Cajon (at www.thegarden.org ).  Among these resources are landscape design and horticulture experts offering consultations on subjects like “California Friendly Plants”, watering, arboriculture (the science concerned with trees),  construction issues and landscape design. I enjoy being one of those professionals, and I thought you might be curious to learn how such a consultation might work for the people that come there. 

succulents and perennials adorn boulderIn my consultations I generally encounter the same objective:  Feeling the need to reduce their water bill or wanting a landscape that is more practical and ecological,  these homeowners are ready to retire their mostly lawn-centered landscape.  They come to the Water Conservation Garden with the common question,  “What do I plant now?”   Most of them believe that planting the right plants would make their gardens better and solve their problems; isn’t that what the beautiful low-water-use plants at “The Garden” are all about?

I understand this thinking but, as designer and horticulturist, I don’t think that suggesting different, albeit drought resistant, water-wise  or “xeric” plants, would address the underlying problem (although those plants are generally more sustainable).   I feel that planting random groups of plants into the former lawn area would not create attractive, comfortable spaces for outdoor living that “work”.  Since that is my focus, I explain to the visitors that it would serve them best if they considered first how to make enjoyable outdoor living possible, in separate spaces designed for different uses.

What needs to happen in a yard so it can become an “outdoor living room”?  How do you convert it into a play room, or entertainment space, a space to hang out, relax, dream, rejuvenate? 

A garden space needs to be organized spatially and hierarchically, and I start my design process, in which I involve my visitors, by asking them if they can think of an activity that they would like to do but never had room for or that was relegated to a back corner of their garden.  Perhaps there is some almost forgotten vision of a garden scene in the recesses of their memory that they never took seriously?  Take the example of my last visitors at the Garden:

This family, husband, wife and son, arrived well prepared for the consultation, with photos and a sketch of their garden drawn to scale. They had decided to take out most of the lawn, a large expanse right by the patio; they would only keep a small part of it for their son for whom lawn mowing is a therapeutic activity.  Opposite the patio, far across the lawn, was a planter bed, but since it was so far away and confined also by a low wall, the flowers in it were not recognizable from the patio. To my surprise, the lady told me that it held roses!  Her husband mentioned, almost in passing, that he would like to grow succulents.  Some trees were there, but they had been planted around the louter perimeter of the lawn so that they couldn’t throw any shade where it mattered most, which was on their hot south-west facing patio. 

“Hardscaping” elements such as patios, walk ways, fencing, arbors, boulders –  convey permanence and add structure.  Most of them don’t have to be maintained, except for some new coat of paint or occasional sweeping, depending on the material used. And they don’t demand watering, fertilization, pruning… So I suggest to incorporate them as much as possible into a design and let them “furnish” the garden, organize the space into areas of different use, provide separation as well as access, focal points, delineation and definition.

In the case of the before mentioned visitors, we found that a swing for adults, placed under a shade tree, would be lovely to have; I suggested to place it at the far end of the garden from where the family could see house and patio from a new perspective, and I drew its outlines on transparent paper taped over their sketch. And why not pull rose bed and succulents closer to the patio from where they could be seen?  Of course not into one flower bed, but in different areas that are perhaps even mounded up, separated by a walk way:  Gently curved mounds give movement to an otherwise flat plan, and the plants on them can be seen better, like on a painted canvas. And if your soil drains poorly, creating those mounds helps improve the drainage because you can mix the mounded soil to provide the drainage your plants need, such as many Mediterranean plants, California Natives and succulents, and even roses.

roses decorate arbor and frame a view

roses framing view

As for the lawn, we drew a much reduced kidney-shaped area that started at one end of the patio, wrapped around behind the rose bed and the succulent mound, and ended at the other end of the patio. This way it was still visible and easy to get to from the patio without dominating the foreground.  And to make all the different areas accessible, we discussed stepping stones and DG as possible material for the walkways, even coarse landscape mulch was considered.

Lastly we reviewed the possible locations of trees, and I pointed to my most favorite reference books on this subject:  Ornamental Trees for a Mediterranean Climate, the trees of San Diego, by Steve Brigham with book design and photographs by Don Walker, and the Sunset Western Garden Book. Here gardeners can research all their favorite choices before making the final selection; they can actually visit the trees shown in the tree book at their location!

Our time was up, and although we had not talked much about plants in detail, the family was happy (I suggested to look to the Water Conservation Garden’s displays for ideas).  Both husband and wife had information and tools in their hands that will make “playing” with their spaces, on paper first, a fun and exciting activity; selecting goals that are realistic and achievable with their budget and energy will now be a manageable task. And finally, armed with the proper reference books and resources that the Water Conservation Garden and other public gardens in San Diego County offer, they will be on their way to a garden that they can enjoy, and live in.

Filed Under: Drought Resistant Landscape, Landscape Design Tagged With: drought tolerant gardening, drought tolerant plants, drought tolerant trees, dry climate design, garden design, garden renovation, gardening ideas, irrigation restrictions in Southern California, landscape design, landscape design consultations, landscape re-do advice, landscape rehab, landscape-redo, lawn removal, limited water resources, low-water-use, outdoor living room, redesign of landscape after lawn removal, sustainable garden design, Sustainable landscape design, Water Conservation, Water Conservation Garden, Water Conserving plants, water-wise landscape design, xeriscape, xeriscape plants

Yay! The fountain is in!

February 2, 2011 By Christiane Holmquist

(Cont’d from http://www.cholmquistgardens.com/2010/12/not-your-everyday-fountain/  )

 cor-ten steel fountain What excitement when the fountain was delivered, after a few weeks of anticipation and faith that the fabricator would “get it” this time.  It’s all we had imagined:  Gracefully curving, it echoes the lines of the house and is of a material that complements its modern character: Cor-ten steel that is formulated to rust naturally and to provide a garden sculpture that works well in this landscape.  Water gently flows over all sides and disappears in the gravel bed underneath (that hides a sub-terranean reservoir from where it is pumped up again). 

This low-volume, water-conserving feature provides constant entertainment as the homeowner sees it from her kitchen window, and will be even more attractive to the grandchildren that can step up closely and play with the water (anticipating this we placed a sitting area next to it.)cor-ten steel water feature in modernistic landscape design

Nothing of these few words reveal of course some “hick-ups” that the landscape contractor had to overcome first (and that are not un-usual in the landscape field):  Tweak the water flow so it sheets evenly over the edges; wait a few days until the water started to clear up after the first rapid rusting which left the water murky.  Now the water is almost clear, and in a month or so it should have completely cleared up.

It’s almost perfect:  Just wait and see it when all the plants are “in” and also the (low voltage) landscape lights that will illuminate it at night; I think it will be beautiful.

cor-ten steel fountain left to rust naturally

Filed Under: Landscape Design, Water Features for Gardens and Yards Tagged With: contemporary fountain design, garden art, garden design, landscape design, landscaping in San Diego County, limited water resources, low-volume fountain, low-volume water features in the landscape, modern fountain, modern garden sculpture, modern landscape design, modernist garden sculpture, modernist water-feature, rusted cor-ten steel in the landscape, steel art in the garden, Sustainable landscape design, Water Conservation, water conservation specialist, water-conserving water feature

“Trees in my garden?…. No tree, please!”

August 8, 2010 By Christiane Holmquist

Front yard before re-landscaping

Front yard before re-landscaping

I never thought I would have to come to the defense of trees in the landscape.  One of the most perplexing moments in my profession happens when a client says that they don’t want trees in their garden. Upon my rather baffled question why, their response is usually “too much water use”, “too much maintenance”, “not needed” or “just too much trouble”.

Hearing this makes me cringe, but I imagine what might have caused their feelings: High maintenance (such as pine needles in their pool filter), nuisance (like olive stains on the pavement), or danger (such as a branch dropping out of a Eucalyptus tree). With these images in mind, trees are for them undesirable members of the plant family that they don’t want in their garden, and they don’t share the notion that “trees are deeply rooted into the human psyche; in a hectic and chaotic world, greenery provides you with a safe, nourishing haven”. (Fran Lambert, Consulting Arborist, in “Trees and Turf”, April 2006).

Front yard after introduction of trees and other colorful plants

Front yard after introduction of trees and other colorful plants

I am passionate about good design as well as about plants, so remaining calm in this situation and not becoming “preachy” is a challenge. The role of trees in the landscape seems uncontested, but when you think about them, what comes to your mind besides beauty, shade, stature?

For me as landscape designer, I am foremost interested in the architectural aspects of trees. First of all, their size and mass establish the overall framework of the spatial composition; in this way, they are among the most important landscape design elements, creating floor, walls and ceilings of “outdoor rooms”. A vegetative ceiling can provide a sense of vertical scale in an outdoor space, a feeling of comfort and shade.

Trees give a house scale and place it in proportion with its surrounding; a house without trees therefore feels like a box that isn’t grounded, like a container that hasn’t settled into its site.

Back side view of house with tree

Back side view of house with tree

Back yard without trees

Back yard without trees

Trees can act as windbreaks or screen of an unsightly view, or frame an attractive one like a picture frame. With their color and structure, they can be used as an accent point in your landscape picture.

Besides being indispensable parts of a design, trees play a great role in human as well as the environment’s health: Their canopies contribute to air quality by filtering dust; they also provide some noise reduction (the tall, densely planted trees with fleshy broad leaves do the best job). And, as a tree provides nesting and shelter for birds, they assist in insect control, and listening to the song of birds is usually very pleasant.

Shady pond

Shady pond

As energy consumer I consider also the energy savings through trees, and last but not last SHADE! “It never rains in California”, and the whole world envies us for it, but to have endless sunshine in a garden would be like living on a sunny plaza that has no shelter from the sun. A man-made shade structure can be a great element in a landscape, but it doesn’t quite have the same effect as the dappled, cool and moist shade of a tree! Summer shade from the deciduous trees placed on either south or west sides can lower utility cost by amazing 10-15% (and allow for solar heating in the winter months).

These are measurable benefits that we gain from trees (not to mention the delight that a tree in full bloom can create). And the cost of trees, you may ask? Of course, there is some maintenance: A young tree will benefit from yearly inspections and minor corrective pruning during its infancy to assist it in growing into a well-shaped healthy specimen; this way a costly restorative pruning can be avoided when the tree is much older.

And water needs? Of course you will need to water your trees; even trees indigenous to our dry Southern California need water during their establishment phase which can last a couple to 3 years depending on the amount of rain during the winter months and other factors influencing establishment.

Weighing the investment in trees against their benefits, consider this:  The National Arbor Day Foundation states that “A well placed and properly irrigated tree will have a measurable return on investment”: In deed, the Foundation estimates the value that trees add to properties at 15-20%!

In order to assure the most pleasure out of your trees and the least trouble, here are some suggestions how to avoid problems with your trees:

Select trees that:

– are in the most natural state as possible and have a good trunk taper

– have juvenile branches spaced throughout the trunk (until trees are anchored and established, lower juvenile branches need to remain on the trunk and main stem and therefore looks more like a shrub)

– are appropriately sized for the container

– have branches with wide angles of attachment (larger than 45 degrees)

Avoid trees that

– have been pruned into a lollipop shape

– are supported by a nursery stake (whenever possible)

– have pot-bound or girdled roots

– appear weak, sick, or unhealthy

– show mechanical damage or other wounds

And don’t plant trees too close to power lines, nor closer than 10 ft to permanent structures. (Check also on proper guide lines for tree planting in fire-prone areas).

There are great resources in our County for people that want to learn more about trees: The book “Ornamental Trees for Mediterranean Climates; the trees of San Diego” is a colorful guide and compendium of a host of trees that thrive here, with descriptions, photos, and even addresses where the photos were taken. The Water Conservation Garden in El Cajon (more info at www.thegarden.org ) showcases many suitable and lovely trees for our area. And of course there is Balboa Park with its trees, and the San Diego Botanic Garden (formerly Quail Gardens at www.qbgardens.com ).

I don’t think I’ll ever be detached and impartial when it comes to trees, but armed with the above list of arguments and paybacks I hope to be more neutral and professional when explaining how trees will benefit my clients and how fundamental (could you say imperative?) they are for their home landscape. Despite of their initial rejection none of my clients has yet refused to concede interest in trees, and fortunately, I haven’t yet had the commission to design a “tree-free” garden. That would be the saddest thing, and I hope it will never happen.

Filed Under: Gardening tips, Landscape Design, Trees Tagged With: architectural aspects of trees in the landscape, drought tolerant gardening, drought tolerant plants, drought tolerant trees, dry climate design, Energy savings in the landscape through trees, gardening ideas, good landscape design principles, landscape design with trees, landscaping in San Diego County, landscaping with trees, limited water resources, low maintenance plants, return on investment in the residential landscape, role of trees in the landscape, the role of trees in the environment's health, trees adding to air quality, trees as landscape design elements, Trees as windbreaks, trees facilitating insect control, trees in the residential landscape as ROV, trees in the spatial composition of landscapes, trees providing noise reduction, trees providing shelter for song birds, trees supported by the National Arbor Day Foundation, Use of trees in the landscape, useful tools for the water-wise gardener, Water Conservation, Water Conservation Garden, xeriscape

FIRE-UP YOUR PASSION – Red plant accents that warm up your landscape

April 14, 2010 By Christiane Holmquist

Mass-plantings of Crown-of-Thorns Euphorbia milii

Mass-plantings of Crown-of-Thorns Euphorbia milii

I have a special predilection for the color Red: Not only does it become me as a blonde, it also fires up my mood, makes me cheerful and revs up my energy. I am drawn to Red like a hummingbird, and if Red on me invigorates me, I believe seeing red “lights” in the garden would do the same. Even in a garden space where the main hues are cooler and more restraint, and where there are lots of calmer tones in rocks, timber, pathways and other hardscape elements, a few red splashes warm up the planting scheme and make the tones more saturated. Red works particularly well in South-West style gardens, where it makes a lively contrast to lighter colors such as DG, sand or gravel whose tones look washed out in the strong sunlight; used as color on a background wall it adds drama to succulents and cacti.

 

Bloodred Trumpet Vine Distictis buccinatoria

Bloodred Trumpet Vine Distictis buccinatoria

  Red can provide a bright focal point, such as a Bloodred Trumpet Vine Distictis buccinatoria drooping from a wall or from an arbor, or a Crown-of-Thorns Euphorbia milii, mixed with Firecracker Broom Russelia equisitiformis, spilling from an urn. Used as accent plant in the background, such as in groupings of red-flowering Aloe behind shorter, softer perennials or clumping succulents, the Aloe’s red flower spikes will show like exclamation points, and their pointy leaves will create a dynamic contrast in structure and texture.

Firecracker Broom, Crown-of-Thorns and Kalanchoe manganii in container

Firecracker Broom, Crown-of-Thorns and Kalanchoe manganii in container

When planted in the foreground as border accent, or hugging the curves of a path, Red creates a bright ribbon through the garden that your eye can follow; as foreground plant repeated throughout the garden it ties different areas together and adds cohesion.

If used as red winter bloomer, f.e. Cyclamen Cyclamen persicum, it will bring much needed warmth into your planter beds, and in dark and shady places the red flowers will shine like lights.

Delightful summer-blooming Cantua 'Hot Pants'

Delightful summer-blooming Cantua 'Hot Pants'

 I am having fun doing this and have compiled lists of plants with red flowers that I like to use. Of course each landscape prompts a different choice because of its design style, its existing sun/shade conditions, its soil type, the character of the architecture and the hardscape materials chosen. The following compilation of “Reds” contains plants with various growing conditions, but all are long-lived, low in maintenance needs and more or less water-wise and tolerant of xeric conditions. (However, it’s important to note that a plant’s location will determine how tolerant of dry conditions it is: For example, a Crangrape Cuphea C. llavea “Crangrape” is more drought tolerant in coastal locations and soils than in hotter inland valleys.) Nor is the list all-inclusive, and if you have more suggestions, I will be happy to add them.

THE SHORT & MEDIUM STUFF FOR SUN & PARTIAL SHADE

Aloes (many): Aloe ‘rookappie’, Aloe saponaria, Aloe arborescens, Aloe nobilis
Autumn Sage & relative Dwarf Crayon Sage Salvia greggii, S. grahamii
Baja Fairy Duster Calliandra californica & Fairy Duster Calliandra erophylla
Blanket Flower Gaillardia grandiflora
Bottlebrush Callistemon citrinus and C. viminalis
Butterfly Weed Asclepias tuberosa
Cantua ‘Hot Pants’ Cantua buxifolia
Chuparosa Justicia californica
Coral Bells Heuchera sanguinea, Heuchera micrantha
Croscosmia
Crown-of-Thorns Euphorbia millii
Emu Bush ‘Valentine’   Eremophila species ‘Valentine’
Royal Beard Tongue Penstemon spectabilis
Firecracker Penstemon Penstemon eatonii

Grevilleas ‘Poorinda Constance” , Grevillea lanigera
Kalanchoe Kalanchoe blossfeldiana & Kalanchoe manganii
Kangaroo Paw “Bush Blaze” & “Sunset”, Anigozanthus flavidus
Many Daylilies: Red Hot Poker, Cardinal Spokes Hemerocallis hybrids
Nodding Pincushion Leucospermum cordifolium
Propeller Plant Crassula falcata
Red Hot Poker Plant Kniphophia uvaria
Sticks on Fire Euphorbia tirucalli
Watsonia Watsonia intermedia
Zonal Geranium Pelargonium hortorum

(See also my previous article “Exceptional Winter Blooming Plants for Southern California”)

RED-FLOWERING TREES
Here only an incomplete list:
Australian Flame Tree Brachychiton acerifolius
Coral Trees Erythrina x bidwillii, E. caffra, E. coralloides etc.
Crape Myrtle “Watermelon Red” and “Tonto” Lagerstroemia indica & Lagerstroemia x hybrids
Firewheel Tree Stenocarpus sinuatus
Mimosa, Silk Tree Albizia julibrissin

Filed Under: Drought Resistant Landscape, Landscape Design Tagged With: Autumn Sage Salvia greggii, Baja Fairy Duster Calliandra californica, Blanket Flower Gaillardia grandiflora, Bottlebrush Callistemon citrinus, Butterfly Weed Asclepias tuberosa, Cantua 'Hot Pants' Cantua buxifolia, Crown-of-Thorns Euphorbia milii, designing by color, drought tolerant gardening, drought tolerant plants, drought tolerant shrubs, drought tolerant trees, dry climate design, Dwarf Crayon Sage Salvia grahamii, Fairy Duster Calliandra erophylla, Firecracker Penstemon Penstemon eatonii, garden design, gardening ideas, Grevillea Poorinda Constance, landscaping for xeric gardens, landscaping in San Diego County, landscaping in xeric conditions, limited water resources, low maintenance plants, Mediterranean-type plants, Nodding Pincushion Leucospermum cordifolium, perennials, red blooms in the garden, red-flowering drought tolerant perennials, red-flowering perennials, red-flowering succulents, red-flowering trees for the xeriscape, trees, Water Conservation, Water Conserving plants, xeriscape, xeriscape for the Southern California Garden, xeriscape plants

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Christiane, your design is beautiful. Viewers love the design and color. Thank you so much for all your support while the project was being developed. It would have been more stressful for me had you not held my hand regularly.

Rachel Michel

CHRISTIANE HOLMQUIST LANDSCAPE DESIGN


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