Entries by John Poimiroo

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Seeing Red

One of the earliest fall colors to enjoy in California’s mountains is red. Though if you seek it, look downward. As, the red of which I write is crawling along the ground. In the Shasta Cascade, it is the Crimson Knotweed that carpets volcanic slopes above 7,000′ in the Northern Sierra and Southern Cascade. In […]


Mammoth Autumn Events Planned

The Town of Mammoth Lakes’ plans for fall festivals is absolutely Woolly! Here’s what’s ahead: September — Mammoth Lakes Bike Month September — November — Ambush At The Lake Fall Fishing Derby September 21-22: Mammoth Oktoberfest  September 29: June Lake Autumn Beer Festival  October 11-12: Mammoth Lakes Tourism Fall Color (INSTAMEET) photography meet up For more about what’s […]


Indian Rhubarb’s Showy Start

Indian Rhubarb, Darmera peltata, is a showy plant that lives along streams in the Northern Sierra. Plumas County color spotter Michael Beatley reports the plant has started to show its iridescent colors along Big Creek, between Meadow Valley and Bucks lake, in Plumas National Forest. Michael says Indian Rhubarb leaves this year are “huge,” and […]


Hope Valley Still Just Starting

Aspen in the Hope Valley (CA-88) are beginning to show their autumn colors, though peak remains two weeks away. Phillip Reedy made his first autumn drive to the Hope Valley yesterday, finding scattered gold among drying brush and late-blooming wildflowers beside the West Carson River.  Just Starting (0-10%) Hope Valley


Good To Go

Reports from the Eastern Sierra indicate that autumn color is good to go up the canyons with peak color starting to appear near 10,000′. It happens quickly in late September, as days shorten and temperatures drop. So, be prepared for possible Near Peak at high elevations there, by the first day of autumn. Josh Wray, […]

Why Don’t Evergreens Lose Their Leaves?

Actually, they do.  It just doesn’t happen all at once. Evergreen trees have both broad leafs and needles. Madrone, magnolia and photinia are examples of broadleaved evergreens, while pine, fir, cedar, spruce, and redwood have needled leaves. Evergreen needles can last anywhere from a year to 20 years, but eventually they are replaced by new […]

Why Do Leaves Change Color?

Leaves on deciduous trees change color in autumn from green to various hues of lime, yellow, gold, orange, red and brown because of a combination of shorter days and colder temperatures. Throughout spring and summer, green chlorophyll (which allows trees to absorb sunlight and produce nutrients) is made and replaced constantly. However, as days grow […]

Why Do Trees Lose Their Leaves?

It’s survival not just of the fittest, but of the wisest. Deciduous trees drop their leaves in order to survive.  As days grow shorter and colder, deciduous trees shut down veins and capillaries (that carry water and nutrients) with a barrier of cells that form at the leaf’s stem. Called “abscission” cells, the barrier prevents […]

How to Submit Reports and Photos

Over 100 volunteer “color spotters” (our term for contributors) submit photographs and reports to CaliforniaFallColor.com each autumn. To be one of them is very easy. Email photos within a few days of when they were taken* to editor@californiafallcolor.com. Include the photographer’s name, date the photo was taken and the location where the photo was taken. […]