Tag Archives: drought tolerant plants

Ornamental Grasses

One of the most dramatic sites in a garden is an ornamental grass backlit by late afternoon sun. They seem to come alive as their tawny flowers spikes glow and sway in the breeze. This is what grasses are all about and why they are so popular. Who could resist?

Grasses are versatile plants and come in all sizes, from ground-huggers to shrub-like clumps. Some form upright tufts,  some look like mop-top mounds and others form arching fountains. They easily adapt to the same conditions most garden plants thrive in, rarely needing any special soil, preparation or maintenance. And more subtly, their gentle movement and soft whispering sounds can bring your garden to life as no other plants do.

Grasses serve many functions in a garden. If you want to replace your lawn and save water you can choose from California natives. Some are low like Carex pansa or sesleria while others like Festuca californica make great flowering accents and look their best massed in groups. Other good natives for meadows are Blue grama grass or Boutelous gracilis, Creeping wild rye or Leymus triticoidies, and Alkali sacation or Sporobolus airoides.

Both San Lorenzo Valley Water ( http://www.slvwd.com ) and Scotts Valley Water Districts ( http://www.svwd.org ) offer many tips and incentives to conserve water. There are lists on the website of water smart grasses. Their rebate programs offers several landscaping credits including  converting an existing lawn to water-wise grasses.  Both districts have guidelines and procedures to apply for the rebates on their websites.

My favorite shade tolerant varieties for meadows include red fescue, acorus gramineus or Sweet flag, festuca altissima, bromus beneckenii, and several varieties of carex-divulsa, blanda and texensis.

But it's the showy accent grasses that always gets my attention and Pink Muhly grass has got to be at the top of the list. A must have for the low maintenance garden this ultra-rugged, ultra-tough California native grass is topped in late summer and fall by enormous plumes of cotton-candy pink that can also be used in dried arrangements.

I like variegated plants and two-tone grasses combine well with many other garden plants. Miscanthus sinensis Morning Light is an especially refined and elegant ornamental grass. Fine leaf blades are green with clean, paper-thin, white margins that give the plant a silvery cast when viewed from a distance. It is luminous when backlit by the early morning or late afternoon sun. Morning Light tends to keep its upright shape better than some other cultivars and rarely flops. The reddish bronze plumes that appear in late fall are spectacular.

Another personal favorite ornamental grass is Stipa gigantea or Giant Feather Grass. This semi-evergreen grass grows 2-3 ft high and makes a stately specimen with narrow, arching foliage and shimmering gold panicles that reach 6 feet tall. The flowers open early in June as silvery-purple and mature to shades of wheat. Large plants in full flower are a spectacular sight. Their tufted, clumping form makes them suitable as accents anywhere. It takes drought once established but also will grow with regular garden watering. The beautiful flower spikes are good in dried arrangements.

Caring for grasses is easy. As a rule of thumb, if it browns in winter then cut it back before new growth starts. If it's evergreen by nature just clean up outside leaves. Most like well drained soil and are tolerant of a wide range of garden conditions. You shouldn't fertilize heavily because an excess of nitrogen can lead to lush, soft growth that tends to flop. Mulching with 2" of compost yearly will keep the soil and your plants in good shape. Water grasses regularly during their first year to help get a good root system established. Even grasses that are normally touted as drought-tolerant require a season or two to become fully established.

Hidden Gardens of Bonny Doon

Enter the Hidden Gardens of Bonny Doon with me as I preview several gardens that will be featured on the tour this coming weekend.  While some of our gardens have a few areas with a "wow factor" , the gardens I was privileged to visit have this element at every turn. I was amazed, impressed and truly honored to spend time in each of them.

First stop was a garden that took my breath away. Looking past the lush lawn, the view takes in all of Monterey Bay. It wasn't always this way, the owner explained. When she moved to the property in 1981, she didn't even know there was an ocean view. It was only after some judicious pruning that this stunning view was revealed.

We  ambled through the many paths that took us up close and personal with perennial beds overflowing with blooming iris, spirea, weigela, succulents, hardy geraniums, coprosma and coleonema to name just a few.

Rabbits are an ongoing problem in this garden. Seems they love her Angelina sedum, coprosma, and Rose Campion as much as she does. Little 12" tall fences surround several of the beds which looks comical but apparently works as the rabbits don't like to jump over them.

Stained urbanite has been stacked by the owner to make short retaining walls and the look is quite classy blending in the flagstone and gravel paths. She explained how easy it was to stain the broken concrete from the old driveway by slapping on some concrete stain. "Piece of cake", she told me.

Other flower beds she edged with Sonoma fieldstone, stacking them herself. At every turn you can see the personal touches that make a garden unique. An old rusty mailbox was tucked into one of the beds overflowing with blooming pansies and million bells calibrachoa.  I loved this garden.

Next stop was another garden 30 years in the making. You won't believe the "before" pictures when you see this garden now. I could barely see the potential in the old pictures but the owner could and started to build up the rock hard soil bed by bed. After many years she has created  an organic garden full of flowering rhododendron, roses, viburnum, herbs, vegetables, citrus, apples and a 5 year old  Staghorn fern that measures 4 ft across.

The owner explained that deer are not a problem because they won't jump the irregular picket fence. Seems the wide pickets confuse their eyesight. Unfortunately, the gophers have decided recently that after 14 years, her camellias are now on the menu and she has lost almost all of the original 40 in the past year. Instead of lamenting her loss, she sees it as an opportunity to add new plants. She has the optimism that all gardeners possess.

Chickadees nested in a box attached to the porch. Garter snakes and alligator lizards patrol the flower beds. A bathtub, sunk into the earth serves as "the poor man's hot tub". Old metal chairs are planted with flowers and ferns and other found garden art is sprinkled generously though out the garden. This is the garden of an artist whose studio is nestled back among the trees. At every turn you feel the peacefulness of this wonderful place. This is a garden to experience not just view.

The last garden I was lucky enough to preview, was an asphalt driveway just 6 short years ago. There are occasional unplanted spots that still show asphalt. What a transformation. With the help of lots of top soil and an auger this gardener has created a spectacular space.  "Everything grows like crazy here", she explained.

The front garden is open to deer and is planted with echium, leucospermum, arctotis, barberry, thyme, rosemary and New Zealand flax. One of her favorite plants is a huge variegated holly that buzzed so loudly with bees I thought the electrical line coming into the house was making all the racket.

In the back, a small orchard edged the fence. Blooming lilacs by the deck heavily scented the air. Succulents intermingle with peony, erysimum and gaura. This gardener explained she " she is one of those people who buys whatever she likes and then finds a place for it". Having had previous experience growing grapes and olives in Sonoma, she is a hands-on gardener who does it all herself. She's a self-described  "drip queen".

A ceramic artist, her sculptures are focal points though out the garden. There is a lot of other garden art in this garden, too.

Where do these gardeners find the garden art, water features and other items that give their gardens that personal touch? One explained, she is always on the lookout for estate sales as she drives around or sees advertised in the paper. "That's were you can really find the treasures", she explained. "Little old ladies have some great plants and other wonderful finds in the back of the garden".

The Hidden Gardens of Bonny Doon Tour takes place Saturday and Sunday, May 19th and 20th. Don't miss it.
 

Zauchneria & other Favorite Plants for the Santa Cruz Mountains

I don't have room for any new plants. Really I don't, but come spring I just can't help myself. Every pretty plant I see in a nursery or at a friend's house, I want. Admiring from afar just won't do. I rationalize that if I choose from plants that will do well in my specific environment then it's OK to add something new to the garden. If you want to be armed with a check list of possible new plants that are almost guaranteed to do well in your own neck of the woods and without a lot of water, here are some good choices.

For those who live in the sun, consider a brilliant red California fuchsia. Hummingbirds and butterflies are both attracted to zauschneria which starts blooming in summer and continues through fall. They provide a principle nectar source for hummingbirds though the hottest, driest season. Deer aren't interested in them, either.

Ghostly Red is one of my favorites for sunny slopes although it will grow in some shade and is tolerant of many soils including alkaline, sand, clay and serpentine. The foliage is grey-green and shows off the intensely red flowers. It grows about 1-2 feet tall which is tall enough to attract the hummingbirds but low enough to be neat and tidy. Each plant can spread to 5 feet wide.

Another good variety of California fuchsia is Everett's Choice. This fast growing groundcover has dark orange-red flowers on a low, spreading plant. Furry grey foliage creeps along the ground and looks beautiful next to a path or rock wall. It's drought tolerant but will look fuller with an occasional drink after it's established. As with all California fuchsia a hard winter pruning will produce a denser plant the following year.

Consider combining either of these grey-leaved California fuchsias with the new Black Adder phormium to make a dramatic statement in your garden. Black Adder was bred from the deep, deep brown Platt's Black phormium but its color is even more striking. Deep, burgundy-black leaves have a high gloss overlay which eliminates sun fading. Black Adder is a strong and healthy grower with an upright but not stiff architectural form. When mature it reaches 3 ft tall by 3 ft wide so fits nicely into the garden.

Originally native to New Zealand, phormiums are also known as flax and their hemp-like plant fibers were traditionally used by New Zealand's Maori people to make rope, baskets and cloth.

Other good companion plants for California fuchsia are Bee's Bliss salvia, Western redbud, rockrose, buckwheat, armeria maritima, deer grass and ground morning glory. Ceanothus, rosemary and manzanita also look good with California fuchsias.

Shady gardeners ( no, I'm not making a moral judgement here ) or should I say gardeners who live in the shade or have portions of their gardens in the shade, have lots of plants to tempt them. Favorite plants for dry shade include flowering currant which is so spectacular at this time of year. This shrub blooms with huge clusters of pink, rose or white flowers. Other plants that attract hummingbirds in bright shade are Western columbine, bleeding heart, heuchera and mimulus. You can find these in a rainbow of beautiful colors these days.  Humminbirds love salvia spathacea so much they're called Hummingbird flower. Also suitable for planting under oaks are Douglas iris. I love the white Pacific Coast hybrid variety, Canyon Snow. Their white flowers make an area under tall trees come alive.

A couple of new additions to the garden would be fun especially if they don't use up your water budget. With a little planning you can have color, attract wildlife and have water for the vegetable garden, too.
 

Trials & Tribulations of a Test Garden

While at the Watsonville Terra Sole Nursery recently, owner's John and Sherry Hall shared with me their experiences growing and experimenting with plants in their own landscape and nursery. From these personal trials, they decide what to propagate and sell in the small, independent nursery they operate on their property.

With a philosophy to share what they learn with their customers, they grow native and unusual plants and other drought tolerant plants that are adapted to our dry summer climate. Sherry told me that they grow their plants as sustainably as possible, hand pulling weeds and collecting snails by hand. They said they propagate and grow their plants without growth regulators or dangerous chemicals. I saw many birdbaths both in their own landscape and in the nursery. Sherry told me they encourage feathered friends like the Western Bluebird to live in the garden to eat bugs. It's a win-win situation.

Sustainable doesn't just get lip service at this nursery. They don't use labels on their containers making it easy to recycle them. And John makes his own succulent garden boxes from 100 year old barn wood. They looked awesome planted up with a collection of various succulents propagated in the greenhouse.

I commented on the hardy geraniums and other plants coming up through the gravel on the nursery floor. John and Sherry both laughed as they told me "it's the best place to propagate some of the plants. Our son works at a big grower nearby and can't propagate some of these plants even in his $10,000 greenhouse".

What were some of my favorite plants that I saw on the tour and which do they think are the best performers?  
In the test garden, a Lemon Fizz santolina, with foliage so brilliant it looked like a lit light bulb, nestled at the base of a burgundy phormium. A blooming euphorbia completed the vignette. Santolinas are drought and deer tolerant. One important thing Sherry has learned from the test garden is how close to plant things. "They get a lot bigger than you'd imagine from seeing them in that cute little gallon can".

They have an extensive coral bell or heuchera collection that they have been testing for the past 4 years. Starting with 80 plants of different kinds, 90% have survived. The fancy hybrids do need some summer water and compost to look their best. The variety Pinot Gris, with molasses colored foliage, really stood out among the rest.

The echinacea were just emerging from dormancy and will bloom during the summer.  They are very dependable in the garden unless the gophers get them, I was told. Agastache is another one of their favorites and the hummingbirds love them, too. They grow many colorful cordyline from clumpers to tall types. They are doing great, Sherry said. "Maybe a little too great" as they get big fast. Gaillardia have been disappointing but maybe they received too much water at the wrong time, she confessed.

In the nursery, I was drawn to the hardy geranium, 'Bill Wallace'. Loaded with purplish-blue flowers, this mounding perennial blooms for a long time. In another spot, I couldn't miss the rich, dark burgundy flowers of the camellia "Night Rider". "It's the only camellia we grow", the Hall's explained. A very slow grower, it's perfect for containers.

At the Spring Trials they bought a flat of a new acacia called 'Cousin Itt'. This plant is very different from the invasive tree we see blooming each winter. A well behaved 30" mound of soft, emerald green foliage it's drought tolerant and would look great near a dry stream bed.

With so many plants to talk about, we ran out of time and ended with the "under-used, under-appreciated" Beschorneria.  This genus of succulent plants belong to the subfamily agavoides and is native to Mexico. The Hall's are concentrating on propagating a variegated variety in their nursery. A tall blooming red spike had emerged from one of the green species.

This is just a taste of the many plants I learned about that day at Terra Sole Nurseries. From drought tolerance, disease resistance, cold and wildlife compatible the experiments continue.

You can find out more about this small nursery at www.terrasolenurseries.com.

Terra Sole Nursery Trials New Plants

Have you ever wondered what it would be like to start your own little nursery on your property? What would you grow? How would you decide?  Over the years, I've been asked by home owners with a bit of extra property what would be good to grow. What is there a market for? So I decided to ask some friends who trial plants on their Watsonville property and operate a small nursery there how it all works.

Terra Sole Nurseries was founded in 2004 by John and Sherry Hall with the goal of experimenting and growing native, unusual and drought tolerant plants that are adapted to our dry summer climate. "We push the limits on water use in our test garden until we fall too much in love with a plant and can't bear to see it die with our tough love approach", Sherry said as we talked about the their operation.

Just back from attending the California Spring Trials,  Sherry and John were excited to share how they decide what to grow In their nursery. Their focus is to grow a large variety of native and unusual plants, some of which are old-fashioned, some are hot new introductions. What treasures did they find this year?

During the course of a week at the Spring Trials,  the world's prominent plant breeders, propagation specialists, growers, marketing professionals and plant enthusiasts share the latest and greatest at several open houses throughout California. The robust plant varieties of today are a direct result of the countless hours and decades of study from the dedicated professionals spending their time observing, testing and experimenting the new varieties that are more disease resistant, more floriferous, the best performers and are easy to grow in ordinary landscapes and gardens.  

How does a plant get from an idea in a breeder's mind to your local nursery? It all starts with the breeders who might cross pollinate thousands of plants to select maybe a hundred of the best ones. Then the growers buy an unrooted cutting or the seed or plugs of rooted plants and grow them onto a larger size. This is where the finish growers buy the plugs and liners to put into bigger pots growing them to retail or sellable size. Terra Sole Nurseries bought some of the newest plants on the market this year themselves.

What are some of the newest trends that we might see in our neighborhood nursery this year? The breeders of impatiens have developed a variety that appears to have a gingerbread man in the center. Called Patchwork this  impatien has a bigger flower and comes in six bi-colors.

Grafted vegetables, higher in antioxidants, are being developed. Non GMO vegetable varieties are grafted onto vigorous rootstalks to produce a plant disease resistant higher in nutrients. Tomatoes, basil, cucumbers. peppers and lettuce are just some of the vegetables being grown.

Biodegradable pots made from wheat are another of the new trends being offered for sale at the Spring Trials. The pots look like plastic yet breakdown after being used and can be recycled in your compost system. They hold up to the normal environmental pressures of heat, water and cold.

Sunset Western Gardening and HGTV are both offering their own branded plants that are available this year. Patented varieties coming out include a compact hardenbergia called Meena, two upright. compact nandinas- Flirt and Obsessive with bright red winter color and a compact mahonia called Soft Caress with non-prickly foliage. A cold hardy salvia named Amistad that has a very long bloom time will also be coming out soon.

To simplify choices for gardeners, better dahlias, calibrachoa, petunias and pansies are coming on the market this season. Several types are grown in the same pot so the buyer need only to plant one of these in a basket or container to get a combination that will look good and grow happily all season.

With so many plant choices which ones do Terra Sole Nurseries trial in their own garden and grow in their nursery? Next week I'll talk about what Sherry and John have their eye on, which plants they grow and the results of their own plant trials. You can find out more about the nursery at www.terrasolenurseries.com.

Succulents for Color

Fresh from a day spent among the spectacular world of succulents I’m excited about using these unique plants in new ways. Succulent Gardens in Moss Landing hosted a day of speakers, tours and demonstrations showcasing these  fabulous, unearthly-looking plants. I’ve always liked succulents grown along a walkway, around accent boulders or tucked between perennials. Now I’m creating awesome vignettes in containers that I can move under an overhang to protect from excess rainfall and frost if necessary. There are so many impressive varieties to choose from. Here are some of my favorites that I enjoyed on the tour.

Many showy succulents need only a bit of protection during our winters.  Aeonium decorum Sunburst is one of the showiest species with spectacular variegated cream and green 10" rosettes. This plant  grows 2′ tall and looks terrific with black Voodoo aeonium in a pot. Sunburst is hardy to 28 degrees while Voodoo will go down to 32 degrees. Aeoniums do so well in our climate as they come from Arabia, East Africa and the Canary Islands where winter rainfall is the norm.

Aeoniums propagated from tissue culture are now affordable. There was a time when a 2" seedling cost upwards of $100. Tissue culture involves taking the cells from the core of the plant and growing it in a sterile medium like agar. The resulting plants are exact copies of the mother plant and mature quickly.

Echeveria grow naturally in higher elevations of central Mexico to northwestern South America and so do well in our our cool wet winters. After Glow is frost tolerant and looks to be painted with florescent paint. There are spectacular hybrids being developed every year. These are not as hardy as the traditional hens and chicks but well worth the effort to find a place where they can survive a freeze. Frilly Mauna Loa sports turquoise and burgundy foliage while echeveria Blue Curls looks like an anemone in a tide pool.

Aloes from South Africa and Arabia are old world plants. Many like the medicinal aloe vera are frost tender but some, like the tree-like aloe plicitilis, are hardy down to 25 degrees and look great either in the garden or in pots.  Did you know the Egyptians used aloe in the mummification process or that there are no known wild populations of aloe? In South Africa, an aloe called ferox is used in the same way as aloe vera for burns and stomach problems. This variety is hardy down to 20 degrees and blooms in January.

When potting succulents in containers, be sure to use a quality potting mix as good drainage is essential. There are special succulent mixes available but succulents are forgiving as long as the soil drains freely. A great tip I got from Debra Baldwin, author of Designing with Succulents and Succulent Container Gardens, is to add Dry Stall to regular potting soil. Dry Stall is a horse bedding product made with pumice. It is similar to perlite although heavier and less expensive.

Her recipe for succulent soil mix differs with the size of the leaf. For fat, juicy leaves use 75-90% pumice of perlite to potting soil. Fine-leaved varieties thrive in a soil mix of 25% pumice to 75% soil and all the rest get a mixture of 50/50. Don’t add gravel or clay shards at the bottom if planting in a container as this impedes drainage. It work best to fill the entire pot with soil, top to bottom.

Because succulents use little water they are easy to care for. If you hate the idea of having to water after you get home from work, create the garden of your dreams with succulents.