Wednesday, June 4, 2014
LOSING YOUR LAWN
Tuesday, March 1, 2011
Flights of Fancy: South Pasadena Butterfly Garden

SWALLOWTAILS
In addition to the giant swallowtail, two others frequent local gardens. Named for the tiger-like stripes on their yellow wings, Western Tiger Swallowtail (Papilio rutulus) will drink from a variety of plants commonly found at nurseries, including lantana and aster family plants such as zinnia. Eisenstein grows native seaside daisy (Erigeron glaucus) and a variety of sunflowers. These swallowtails deposit their eggs primarily on sycamore trees, but they also use poplars, cottonwood, willows and alders.
The anise swallowtail (Papilio zelicaon) is also abundant here, because exotic sweet fennel (Foeniculum vulgare) has become a roadside weed and wildland invader. Skip the fennel; attract it with native plants from the carrot family.
COMMON BUCKEYE
Despite the name, these small brown butterflies are uncommonly lovely. Their wings are adorned with large eye-like spots in a kaleidoscope of blues, yellows, pinks, orange and black. “One of the reasons buckeyes are still relatively common in Southern California is because their caterpillars eat members of the snapdragon family,” says Karner. He adds, don’t panic if your snapdragons get chewed up. The plants will rebound—perhaps growing even more vigorously—and know that “you’re going to get some nice butterflies out of the deal.” Eisenstein’s garden features another buckeye host plant—native monkey flower (mimulus species).
LADIES
Painted lady (Vanessa cardui) is sometimes called the cosmopolitan because it’s thought to be the most widespread butterfly globally. This small orange and black insect migrates into Southern California from Mexico in late winter/spring. It’s the one school kids rear in classrooms. Among the plants that host its young are lupines, mallows—even a vacant-lot plant called cheese weed--and thistles. Native and exotic mallows are easy to grow. Lupines provide a gorgeous blue accent in a native plant garden; they are nature’s complement to orange poppies.
Resident West Coast ladies (Vanessa annabella) will frequent the same plants. Both species sip from sunflowers and buckwheats (Eriogonum species). Eisenstein grows California buckwheat. It sports little orbs of creamy white-to-pinkish flowers that dry to a rust color.
CLOUDLESS SULPHUR
This pretty pale yellow butterfly has become rare in recent years. It depends on native cassia and senna plants. The exotic ones found in conventional nurseries don’t do the trick, according to Karner. So ask your local nursery to order the natives, or visit the Theodore Payne Foundation in Sun Valley or Rancho Santa Ana Botanic Garden.
MONARCH
These charismatic orange and black butterflies only deposit their eggs on milkweed plants. The black, yellow and white-striped caterpillars nurse on the plants’ alkaloid sap, which makes them toxic to predators. Exotic milkweeds are readily available, but some research suggests they leave the butterflies more vulnerable to parasites than the natives do. A good source for milkweed seed is Butterfly Encounters.com.
When positioning milkweeds, keep in mind that some are not beauties, and the voracious caterpillars will defoliate them. It’s the butterflies that dazzle.
GULF FRITILLARY
This pumpkin-colored butterfly, with black and silver accents, is native to Mexico and the Southeastern U.S. The grey caterpillars brandish horizontal orange stripes and black spines. The insect moved into coastal California when its host plants—passion vines—became popular in gardens. Avoid blue crown passion flower (Passiflora caerulea): it’s a weedy plant that can escape gardens and damage wildlands.
Tuesday, January 4, 2011
Milkweeds for Monarchs

Dwindling monarch butterfly populations have prompted some gardeners to pepper their landscapes with milkweeds, the various plants in the Asclepiadaceae family on which monarchs lay their eggs. Chubby, zebra-striped monarch caterpillars gorge themselves on the plants' milky alkaloid sap, which makes them poisonous to birds.
The question for many isn't whether to grow milkweed, but how -- and which kind.
In Connie Day's Santa Monica garden, a tiger-colored monarch spars with another butterfly, chasing it from a patch of milkweeds.
"The challenge is keeping the food here," Day says, noting that a few monarchs can defoliate a plant in a couple of weeks.
Read the rest of this story in LA Times Home.
Sunday, September 26, 2010
Potted

Rancho Santa Ana Botanic Garden in Claremont displays the ravishing beauty of California's wild plants. But the setting is so operatic, it can be hard to imagine this flora on a smaller stage, say, a patio or apartment balcony.
Unless you happen upon a nook where native plants are potted up for a more intimate performance.
On a foggy morning, a hummingbird swoops in for a sip of Cleveland sage (Salvia clevelandii, above). Impatiently, it probes the whorls of the petite lavender flowers. This sage is usually a sprawling shrub, but confined to a 5-gallon teal pot, the crisp reiterations of dainty leaves and blossoms have the restraint and precision of a Baroque concerto.
Many of Rancho's pots are tall. Low-growing species are raised 3 to 4 feet off the ground, offering a bird's- or bug's-eye experience of these intricate plants.
Saturday, March 27, 2010
Happy Days


Monday, February 22, 2010
Now Blooming




Friday, February 19, 2010
A Word from the Water Wise

Last year I wrote about a gorgeous native plant garden for a local magazine. The piece was a general interest story on gardening with the California flora, but the homeowner and garden's designer, Eric Callow, impressed me with his enthusiasm for what I sometimes regard as the dismal science: irrigation.
Callow, a financial adviser and member of the Rancho Santa Ana Botanic Garden board, had transfered is his talent with numbers and spread sheets to the garden, calculating exactly how much water individual plants in his garden needed.
As someone whose watering regime is often douse plants when I remember to, Callow made my head spin. So I asked him to send along some tips. Here is the first of two parts:
When my wife Elisa and I were looking for a home eight years ago, we had the good fortune to find a mid-century modern house designed by Lloyd Wright Jr. The house came with twenty thousand square feet of yard begging to be re-landscaped and I already had a deep interest and some experience with California native plants. So, it was the perfect opportunity to design and install (with help) my own California native garden-including hundreds of feet of irrigation pipe and tubing.
The garden has matured wonderfully in many ways over the last five years and has been included on the Theodore Payne native garden home tour over that period. Certain areas in the yard have been real challenges, however, with apparently healthy plants just up and dying or other plants hanging on but not prospering. I decided it was time to consult an expert, so I called horticulturist Lili Singer.
Singer is special projects coordinator for the Theodore Payne Foundation, where, among other things, she produces the above referenced home garden tour. As she checked on my garden, noting a variety of problem plants and areas, a clear theme developed: most of the time, the problem lay in how the plant was being watered. It was not just a matter of too much or too little either; Lili also analyzed cases of inconsistent watering (too much, trying to make up for too little) and uneven watering (supplies not reaching some of the roots). As a result, I’m reviewing and revamping my garden irrigation system, circuit by circuit, again.
Now, not everyone wants to start digging up and replacing valves and sprinkler heads, let alone laying pipe, but two issues argue for at least understanding some of the big concepts.
For one thing, we’re all going to be pressured to use less water in the years ahead. In fact, the package of water bills recently passed in Sacramento stipulate that urban users will reduce their usage by 20% and local water districts are required to have a plan in place to do so sometime this year. The legislation raises some serious issues regarding the justice and necessity of singling out urban users, but there’s no question that we as gardeners need to do our part to save water.
Secondly, in my experience, the average hired gardener can’t be trusted to know what they are up to when it comes to analyzing or designing an irrigation system. Indeed, I’ve had to rework an extensive drip system because a professional landscape contractor’s employee didn’t understand the following precepts.
So, here are what I consider to the big concepts for understanding garden irrigation.
1. Hydro-zone: an area of plants with similar water requirements, watered by a single irrigation valve and circuit of spray heads, drip emitters, bubblers et cetera. The valve is like an electrically controlled faucet. When the controller/timer tells it to turn on, water is released into the circuit of pipe or tubing and distributed over the area being watered.
2. Efficiency: laying down water evenly over the hydro-zone and only in the hydro-zone.
3. Pressure: the force, measured in pounds per square inch (PSI), available at the irrigation valve.
4. Flow: the volume of water that will flow to the hydro-zone at a given pressure.
5. Precipitation: the amount of water delivered to an area (hydro-zone) measured in inches.
A hydro-zone can be simple, like a rectangle of turf, or complicated such as an irregular shape or even overlapped. It boils down to a grouping of plants that can be efficiently watered from a single valve. For the health of your plants-and your own sanity-you want to place plants together that need similar amounts of water in the same seasons.
Efficiency has to do with getting water to all the plants in the hydro-zone and not to anywhere else (like the driveway, etc.). Even application is important too since an under-served section of the zone will force wasteful over watering of the remainder. Professional irrigation designers assume that their best design for placement of the sprinkler heads will be only 90% efficient. I think a well designed low-pressure drip or micro-spray (think of a tiny spray head as opposed to a pop up sprinkler) system can do better. If you use more heads or emitters, each covering a smaller area, you can cover an area more precisely.
The pressure depends first of all on what your utility delivers. It’s usually too much, so you will likely already have one or more pressure regulators to reduce it to something manageable. For example, I have 185 PSI at the street, which is reduced to 75 PSI in the yard. That’s still way too much for the faucets inside the house, so there’s another pressure regulator to bring it down to 25 PSI. So, if your irrigation isn’t working well, the first thing to do is to check the pressure with an inexpensive gauge that screws onto a garden faucet. If it’s really low, maybe someone ran your garden plumbing from inside the house!
More often than not, however, the problem is not pressure but flow. Water flowing through a pipe creates friction and turbulence so that the more one tries to cram through it, the more pressure is lost by the time it reaches the other end. Even if the pressure can be increased, there’s only so much water you can get through pipe of a given diameter. Irrigation designers refer to charts to tell them how much of the pressure they’re starting with at the valve will be lost for every 100 feet of pipe the water is being pushed through.
Let’s say your irrigation circuit is designed to pump out ten gallons minute (not unusual), but the water is being pushed through 100 feet of half inch pipe before coming out the heads. The result will be really anemic because over 30 PSI will have been lost before the water gets to the sprinkler head. If there’s 200 feet of pipe, over 60 PSI will have been lost-perhaps more than you had to begin with! Of course, whoever designed the system should have used three quarter inch or even one inch pipe, but believe me, this sort of thing happens all the time.
Of course, most people will continue to estimate water needs by the old “seat of the pants” method, but I predict that as the conservation screw keeps getting turned, measuring precipitation will become the norm. How to do that is another conversation, complete with charts and graphs, which I’m writing up for the second installment of Irrigation Insights.
*Estimating Irrigation Water Needs of Landscape Plantings in California
The Landscape Coefficient Method and WUCOLS III (Water Use Classification of Landscape Species)University of California (a free publication available online)
Sunday, January 10, 2010
Manzanitas


Sunday, January 3, 2010
Talkin' Bout Regeneration


Wednesday, November 11, 2009
Casting Seed


Wednesday, September 9, 2009
Trills and Thrills in the Garden

Tuesday, August 18, 2009
Summer Beauties


Sunday, July 19, 2009
Plus-Size Plant

Sunday, July 5, 2009
Isn't She Lovely?



Thursday, June 4, 2009
In the Garden

Wednesday, May 27, 2009
Planning Your California Native Garden
A FEW TIPS...
(Sidebar from my story "Going Native" in the May Issue of Arroyo Monthly Magazine. This version has been expanded for the blog. These photos are from my garden. )
- Study up over the summer. This is not the time to start natives. But May is a great month to visit Rancho Santa Ana Botanic Garden in Claremont to see the plants in a garden setting. Also, study your yard, especially for hot spots. “You really need to know the exposures of your garden,” says Louise Gonzalez, nursery manager at the Payne Foundation. “And your soil type. Do you have well-draining sandy-loam? Or clay soil that drains slowly?
- Read California Native Plants for the Garden by Bart O’Brien, Carol Bornstein, and David Fross. For plants from the other regions, try Garden Plants for Mediterranean Climates by Graham Payne.
- Take a class at the Theodore Payne Foundation. In fall, buy your native plants at the Payne Foundation, Rancho Santa Ana Botanic Garden or Tree of Life Nursery (in Orange County). Most conventional nurseries don’t do a good job of stocking, caring for, or even correctly identifying natives. (One exception: Burkard’s in Pasadena.) For a cohesive look, landscape architect Guillaume LeMoine advises resist the temptation to buy one of each. “You can do a very good garden with five to seven plants. Frankly, my yard is a riot of many plants, but several do reoccur strategically.
- Start your plants in late fall. Generally, don’t amend your soil unless it is contaminated, and forget the fertilizer. You shouldn’t need pesticides, but will want a lot of mulch.
- Many of the plants are drought-tolerant, but need extra water in first few years to get established. “In general,” says Bart O’Brien of Rancho Santa Ana Botanic Garden, “winter is when they want water and can use it. Not in summer.” Some will stay greener with a deep soak once a month, but others don’t want any summer water once they’re established.
- Toss in some wildflowers. California poppy is one of the easiest to grow, and looks gorgeous scattered with blue lupines. I also love the bold pinks of elegant clarkia, the soft, large blooms of farewell to spring (clarkia amoena) and dainty baby blue-eyes (nemophila meniesii).
- Experiment with different irrigation systems. Louise Gonzalez says sprinklers or drip work equally well. Some gardeners recommend smaller micro-sprinklers. Bart O’Brien waters by hand. In my experience, you get more weeds with sprinklers.
- Let some plants go to seed before you prune them. Birds will flock to your yard. Many annuals will reseed, even some of your shrubs.
- Get your garden certified as wildlife habitat from the National Wildlife Federation. They'll send you a sign that lets passersby know about the food, water and shelter your yard provides.
Monday, May 25, 2009
California Native Plants
When Elisa and Eric Callow purchased Gainsburgh House in La Cañada Flintridge eight years ago, the garden wasn’t part of the allure. The house — designed by Lloyd Wright, the son of Frank Lloyd Wright — wowed them, but the yard was an unappealing mix of ivy and diseased shrubs. So Eric Callow, a financial advisor and outdoorsman, decided to try his hand at redesigning the grounds. He wanted to use plants indigenous to California “because they represent, literally, a landscape that is beautiful, under attack and which I know from my childhood.” The new garden is dominated by clusters of leafy shrubs, pockets of perennial herbaceous flowers and a meadow of wildflowers. Native gardens are commonly assumed to be brown and full of succulents, but desert-friendly plants are actually uncommon in local ecosystems. After all, most of California is not a desert; it has a Mediterranean climate — hot, dry summers and cool, wet winters. Most native plants are less thirsty than common garden plants, but they still create verdant, colorful gardens — even more so when they mingle with others from a similar climate.