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East/West Redbud Debate

Western redbud, cercis occidentalis (11/10/17) Robert Kermen

Eastern redbud, cercis canadensis (11/7/17) John Poimiroo

When it comes to redbud, it’s debatable as to which is prettiest in autumn… East or West.

The eastern variety, cercis canadensis, displays bright gold and green heart-shaped leaves.

Whereas, western redbud, cercis occidentalis, display orange, red, gold and lime heart-shaped leaves.

Both are equally stunning.

Redbud is often overlooked by color spotters who give up looking for great fall color as soon as the forests of aspen have turned, but not Robert Kermen or me.

Robert found western redbud growing along Big Chico Creek in Chico’s Bidwell Park.

Cercis occidentalis are native to the Sierra and North Coast foothills. Native California indians used their barks for basket weaving and as a red dye. In springtime, their showy pink and magenta blossoms grow in clusters all over redbud shrubs that garnish foothill river canyons.

Western redbud, cercis occidentalis (11/10/17) Robert Kermen

Western redbud, cercis occidentalis (11/10/17) Robert Kermen

I have the pleasure of enjoying an Eastern redbud all year long. It grows in my side yard (El Dorado Hills) and provides an inspiring show when autumn light backlights the leaves in kelly green and yellow.

Eastern redbud are a popular landscape and street tree, appreciated for their shape, shade and autumn color (best from late October to early November).

Their heart-shaped leaves flutter in a soft autumn breeze, as if they’re beating.

OK, there’s no debate. East or West, who couldn’t love redbud with all they have to show?

Cercis Occidentalis Range – Wikipedia

Redbud – Peak (75-100%) – Their range forms an upside down fish hook, leading from the SF Bay Area north through wine country and the Redwood Highway, then bending east through Trinity County to the northern Sierra foothills, then south to the Southern Sierra. GO NOW!

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Autumn Accipiters and Asteraceae

Redtail Hawk (11/5/17) Robert Kermen

Ferruginous Hawk (11/5/17) Robert Kermen

Coopers Hawk (11/5/17) Robert Kermen

Robert Kermen was looking skyward to find these hawks watching him from autumn posts spare of leaves.

Accipiters are the largest genus of birds, writes Encyclopaedia Brittanica, with more than 50 species of falconiform birds.

Kermen found these on one morning in Northern California. Though, many others have been attracted to Northern California to prey on migratory waterfowl.

In autumn, hundreds of thousands of duck, geese and other migratory birds pass through the Central Valley, providing a flying feast for these raptors.

After looking skyward, Robert looked down to see another form of living autumn color in full bloom…  exotic Asteraceae, a flower native to South Africa.

Central Valley Flyways – Peak (75-100%) – GO NOW!

Kiss Bronze Star Gazania (11/5/17) Robert Kermen



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San Rafael’s Maidenhair

Gingko biloba, San Rafael (10/29/17) Anson Davalos

Each autumn, maidenhair coifs the streets of San Rafael with bright yellow.

The maidenhair of which we speak are the gingko biloba trees, a good choice to be planted along city streets, not just for their dazzling autumn color, but also because the trees don’t uproot sidewalks and roadways.

Gingko biloba is called a “living fossil,” as it is one of the world’s oldest living species, dating back 270 million years.

Extracts from the gingko are often associated with curing memory loss and sorts of ailments from dementia to Alzheimer’s disease to altitude sickness. Though, it’s never been established, scientifically, that they can do any of this.

And, while gingko seeds are sometimes found in Asian cooking, eaten in large quantities they can be hazardous.

Perhaps someday we will find beneficial uses for the gingko biloba beyond their beauty, though in the first two weeks of November they provide lovely color and form along the streets of San Rafael.

San Rafael – Near Peak (50-75%) – Maidenhair have coiffed the streets of San Rafael. GO NOW!



Tree of Heaven: The Devil’s Work

Tree of Heaven, Ailanthus altissima, Anderson (10/18/17) Gabriel Leete

Tree of Heaven (Ailanthus altissima)  is less angelic than it is the devil’s work.

It is one of many invasive, non-native species that, once established, takes over the natural landscape preventing native trees from growing.

While beautiful in autumn with its bright red color, Tree of Heaven will produce over 52 million seeds during its 100-year life.

That’s much more than other trees like maples and oaks. And, while oaks will take decades to produce acorns, Ailanthus produce viable seeds in just a few years.

Modern Farmer writes that “the book,  A Tree Grows In Brooklyn, was about an Ailanthus, using its ability to thrive in cement or garbage, with poor soil, poor light, and poor water supply, as a metaphor.

“If you cut it down, it’ll regrow from its own roots. It also blocks out native plants, altering local ecosystems, partly because it grows so fast and efficiently, and partly because it is allelopathic, meaning that it produces chemicals that inhibit the growth of nearby plants. It isn’t content to just box out native plants; it cheats.”

Native to China, Ailanthus is prized there for its use in traditional Chinese medicines and as a habitat for silk worms.

However, here it has only ornamental value and takes over habitat that would otherwise be populated by native species.

Modern Farmer writes, “Currently, there are no easy options (to eradicate them); some solutions involve hacking notches into the trunk with a machete before applying herbicide, or pulling out the entire root system of younger trees.”

So, enjoy the beauty of Tree of Heaven, but don’t encourage them. There really are devils beneath those angels’ wings.