San Francisco Flower & Garden Show 2012

Every year after attending the San Francisco Flower & Garden Show I'm exhilarated by the creativity of the display gardens  and the fresh use of familiar plants. Don't even get me started on the new plant introductions I want to use in my next landscape design. This year the world-class show celebrated its 25th anniversary.

A Flower and Garden Show is a huge and complex production. Creating the 20 display gardens is a demanding task and planning for them begins many months before the show opens. By the night before the show opens 1,200 cubic yards of sawdust and mulch ( that's about 150 dump truck loads ) have been spread and 280,000 pounds of rock stacked in undulating walls and water features.

The flowers and plants for the garden come from all up and down the West Coast. Many plants are forced into early bloom for the show as Mother Nature doesn't always cooperate. Even flowering trees are sometimes kept in greenhouses so that their buds can be timed to open the week of the show. It's not a perfect science. One display garden creator who garnered 5 awards told me that hundreds of daffodils she had planned to use in her garden bloomed a week early due to warm weather. 

This year the theme of the show was "Gardens for a Green Earth". There were tips for edible gardening at home including containers for herbs and veggies on the patio and small space gardening, too. One of my favorite gardens combined tomato and flowering vines cascading over the edge of a stone vaneer wall.  Raised vegetable boxes bordered the deck for easy access and a stone water fall splashed into a huge half oak barrel.

Another interesting garden was the Low Impact Bay Friendly Garden. Modern in design, this low water-use garden featured tall raised beds surrounding a pervious concrete stepping stone patio set in a gravel base. Pervious concrete is said to be able to take in storm water a a rapid rate of over 5 gallons per minute per square foot of surface area. That far exceeds the flow rate needed to prevent runoff in even the most severe rain events.
The rainwater is temporarily stored in the course gravel layer underneath while it is allowed to naturally percolate into the underlying soil. This could be a good solution to solve site drainage problems.

Most of the display gardens featured water in them. Some were large affairs with cascading boulders while others were small and understated. In one, a length of copper tubing delivered a shower of drops in front of an aged corrugated iron panel. Another consisted of a simple stacked flagstone ledger waterfall flowing into a flagstone pond- a DIY project?  Even used tires were used as the base for the flagstone edging around a pond although frankly, I couldn't picture this water feature in anybody's backyard. One I did like was a simple flume of water pouring into a small metal rectangle lined with Mexican black pebbles. A little feature with lots of impact.

Fire pits were prevalent, too. From ornate fireplaces to glass filled affairs to simple metal rounds filled with cobbles outdoor living is enhanced with fire and water.

I had to laugh when a man asked me at one of the gardens what I was taking a picture of.  Well, I explained, I take photos of paths and steps and how they're put together and the materials they're made of for future reference. "Oh, that's a good idea" he said, and started taking pictures, too. All in a day at the San Francisco Flower and Garden Show.

March Gardening Tips

The rain last week was welcomed by all of us who like to watch things grow. There's a patch of grass growing beside a creek where I live that is the brightest neon green I've ever seen. Whether you call it apple green or lime green or chartreuse it shouts spring officially started on March 20th, the vernal equinox.

Spring weather here in the Santa Cruz Mountains can be warm and sunny one day, gray and rainy the next. Strong winds often blow last years crop of oak leaves all over the deck you've just swept but none of us would  live anywhere else.

Now that daylight savings time has started we have more time to spend out in the garden. One simple addition that makes being outside in the cooler evenings more enjoyable is a fire pit. For ideas search Google images to be inspired. You can install a simple metal fire pit for burning wood or get fancy with a stone pit surrounded with gravel and stone seat walls. I guarantee you'll be happy you set aside a space for this addition to your garden.

What other to-do's are there in the garden in March?

Fertilize – Take advantage of the moist soil to fertilize your garden.  Lawns and groundcovers are beginning their spring growth spurt and new leaves on trees, shrubs and perennials are starting to emerge. Spread compost, manure, or organic fertilizer to help plants get off to a strong start. Your citrus may be looking yellow from lack of nitrogen which has leached out of the soil through the rainy season and they may be lacking in iron.  Feed them with citrus and fruit tree fertilizer. I like to put out a granular or time release fetilizer before a storm and let the rains water it in for me.  Make sure you keep fertilizer off the foliage and crown of the plants. Wait to feed azaleas, camellias and rhododendrons until after they bloom.

Prune – Clean up winter damage on perennials, vines and shrubs.

Transplant –  If you need to move any plants in the garden, now is a good time.  Plants are full of growth hormones and recover quickly from transplant shock.

Divide perennials –  To increase your plantings, lift and divide black-eyed Susan, gaillardia, catmint, coreopsis, daylily, diascia, geranium, ground morning glory, lamb's ears, penstemon, shasta daisy, society garlic and yarrow.  Also I see my hostas are just beginning to come up so dividing them or transplanting them at this time is easy and you don't risk ruining their georgous leaves later after they unfurl.

Weed – Pull weeds regularly before they set seed. They pull out easily from moist soil. Think of weeding as free gym time.

Houseplants – Now that the days are getting longer and temperatures are inching up your houseplants can be repotted if roots are poking out of the bottom or are matted on the surface.  Houseplants rest in the winter and don't require much fertilizing.  You can resume feeding now with a balanced fertilizer. Your plants will benefit also from leaching the accumulated salts from the soil. Take them to the sink and run room temperature water through them several times.  Houseplants clean the air.

Our last estimated hard frost of the season is approximately March 15th. Sometimes we get light frosts into April so have frost blankets or any blanket or towel ready to protect seedlings. Even a cardboard box over frost tender new growth will work fine.

The World of Bonsai

I walked through an Asian inspired bamboo gate and entered another world- the world of bonsai.  Some trees were blooming, others just leafing out and some had trunks thick and gnarled like they've been alive 200 years- and they have. Here at the garden of the Santa Cruz Bonsai Kai  president, Ron Anderson, I was treated to a tour of 100 specimens in his personal bonsai collection.

The word bonsai comes from two Japanese words that provide the most basic definition of this living art form. "Bon" is a tray or pot , while "sai' means to plant.

At each turn, I marveled at yet another tree in training. Some already in classic bonsai pots while others were still in cut down nursery pots awaiting their day to be root pruned and given a shallow tray.  As living things, they are always growing, leaves and stems being pinched, the branches wired into natural looking shapes, the trunks thickening and sometimes developing nebari or that most sought after look when the surface roots of the tree or root flare are visible above the growing medium

 

Ron told me he has always been interested in Asian and Japanese gardening. It was only 5 years ago, however,  that his father-in-law took him to a bonsai show. He was hooked. His first bonsai? A boxwood that someone was going to throw out. He gets a lot of his plant material that way. Craig's List has been a great source of old, gnarled  plants. A giant rosemary shrub awaits dividing in a wooden box. A huge Tam juniper was on it's way to the dump. He also has many old, overgrown boxwoods in various stages of training that have much potential.Although many people new to the art of bonsai start with a little finished juniper or buy starter plants, collecting wild trees ( yamadori ) is one of the best ways of acquiring new material for bonsai. Ron found a Sierra juniper in a crevice in the Lake Tahoe area that is probably about 200 years old from the looks of the trunk. Care was taken to get most of the root system, otherwise the tree would have been doomed. A tree collected from the wild must be treated to the highest standard of care. But the reward or a unique yamadori bonsai is a worthwhile prize for spending days, months or years searching for potential material.

Ron also finds potential bonsai specimens in nurseries, looking mainly for 5 gallon or larger plants with an interesting trunk. That way the tree looks more like one found in nature. The oaks on Hwy 152, are good models for bonsai design, he says. Bonsai enthusiasts strive to evoke the ravages of nature in their trees. Except for young bonsai-in-training, most specimens seem much older than their small size suggests. And they may also appear to be veterans of years of struggle against natural forces. Actual age is of less importance in bonsai than the illusion of age. To that end, Ron will shave, cut and sometimes burn a trunk or branch to create the look of a lightning strike.

In Ron's collection are flowering quince, pear, elm, boxwood, juniper, azalea ( picky, he says ), cotoneaster, crabapple, olive, persimmon, dawn redwood, coast redwood, strawberry guava, Korean hornbeam, peach and "the cadillac" of bonsai- the black pine. Ron has two of these now.

Most bonsai live outdoors like they do in nature. There are very few that thrive inside. For his wife, Ron is training an olive tree that will eventually live indoors. Starting with a 7 ft tree, it's now 6 " tall. He is forcing new limbs to grow out from the trunk and it now has three branches.

What conditions do bonsai like? Ron keeps all of his collection outside year round. Some are under trees while others are out in the open even on frosty nights. During the summer they get morning sun and afternoon shade. He waters all of them every other day during the growing season but cautions that he knows his plants and their requirements and someone else may have to fine tune their own individual watering schedule. There is no soil in his soil mix, preferring a mix of small pumice, red lava and a few other things he's learned about but "can't give his secrets away". The most important thing is for the mix to have perfect drainage or the tree roots will rot.

Ron transplants his deciduous trees every year as they grow so fast. Evergreen trees are repotted every 3 years. A rootbound tree, with circling roots in the pot, won't be healthy and growing new root hairs. This will inhibit the growth of the trunk and it won't be able to increase in girth.

Deciduous bonsai, Ron explained, are grown in unglazed trays usually in soft, dark colors. Colored glazed containers are reserved mainly for shows although flowering and fruiting plants are sometimes grown in them also.

Santa Cruz Bonsai Kai meets every 3rd Saturday at 9am at the Live Oak Grange hall on 17th Ave in Santa Cruz. Workshops are held on the 2nd Wed of each month at 7pm at the Aptos Grange hall. Ron said that the club has increased its membership by 30 due to its presence on Facebook which is good as without new members, the knowledge won't be passed on.
Visit their website at http://www.gsbf-bonsai.org/santacruzbonsaikai/

And don't miss the upcoming Santa Cruz Bonsai Kai show Saturday, March 24th and Sunday, March 25th to be inspired and have all your questions answered about growing bonsai from the experts. Both days will feature a demonstration at 2 pm by the famous bonsai sensei, Katsumi Kinoshita.  In the demonstration, Kinoshita will show where and how much to trim an ordinary piece of plant material, how to wire the branches to set their growth in the desired shape and how to pot the tiny tree. The completed bonsai will be the prize in the raffle afterwards.

At the show every plant sold comes with an invitation to Santa Cruz Bonsai Kai meetings, where new enthusiasts are welcomed and nurtured.  
 

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