California Desert Plants

California’s deserts have always fascinated me. In the late 1990s and early 2000s I visited many areas of the Sonoran, Mojave, and Great Basin in California while teaching in Southern California. Since moving north, I have often dreamed of returning. In 2020 Backcountry Press was approached by Dr. Philip Rundel from UCLA about doing a book on California Desert Plants. This was an exciting prospect and an easy decision to make. After over a year of work (he has been working on the idea on and off for 15 years) we are excited to announce that the book is done.

California Desert Plants
California Desert Plants

For me, this book is amazing because it tells the story of one of the harshest environments on Earth. There are three distinct desert areas in California—the northwestern portion of the larger Sonoran Desert, the Mojave Desert which extends beyond the state, and the western margin of the Great Basin. A key feature of the California deserts is the dominance of infrequent rainfall in the cool winter months and general absence of rainfall and associated drought in the summer months when warm temperatures are otherwise favorable for growth. The combination of these harsh conditions nurture amazing plants with a complicated variety of adaptations.

If you love the California deserts and its plants, and would like to help support this passion project head on over to Backcountry Press and pick up a copy today.

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Trees in the Desert

Exploring the Mojave National Preserve

Mojave National Preserve Park Service Map

Established in 1994, the Mojave National Preserve encompasses 1.6 million acres roughly bounded by Interstates 15 and 40. Most simply pass by this region on their way to other places (Lost Wages, Nevada for example) but it is a premier desert park. This vast and varied landscape includes dunes, dry lakebeds, granites, volcanics (domes, lava flows, and cinder cones), limestones, and sedimentary deposits which support a diverse collection of plants. The preserve includes creosote bush lowlands at 880 feet near Baker all the way up to conifer woodlands at 7,929 feet on the summit of Clark Mountain. The Mojave Wilderness is 700,000 acres of the preserve.

Within the preserve is the University of California Riverside’s Sweeney Granite Mountains Desert Research Center. The University of California’s GMDRC is dedicated to academic research and teaching and access is solely through an application approval process. This was was our basecamp. I am working on a book with Philip Rundel and Bob Patterson called California Desert Plants (Backcountry Press, late 2022) so we came to experience, explore, photograph, and write about the regional wonders. In particular, we wanted to find trees in the desert.

Trees in the desert framing the Granite Mountains Desert Research Center.
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Sitka Spruce Decline in California

Where Highway 101 hugs the Pacific Coast in Humboldt County, north through Del Norte County, Sitka spruce (Picea sitchensis) are loosing needles at an alarming rate. This phenomenon, caused by the non-native green spruce aphid (Elatobium abietinum), grew into a noticeable problem in winter 2019-2020. The aphid thrives during winters with warmer than normal temperatures. Last year’s defoliation was especially severe in Oregon and the aphids continues to move south. Sitka spruce decline in California is in its early stages.

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All Species Grove

Exploring the remnant old-growth of the Humboldt County Headwaters

In late 1985, a family company in Humboldt County was over taken by a large corporation from Texas. Within a few months, the profit-driven Maxxam Corporation submitted (under the name Pacific Lumber) a furtive timber harvest plan with a rush order to log some of the last, largest swaths of remaining old-growth redwoods in the world. Thankfully, a small group of concerned environmentalists were watching. Leading the guard was Greg King who, along with others, organized and Headwaters Forest Campaign which soon became the largest forest protection civil disobedience demonstration in America’s history.

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Western Redcedar in California

From Alaska south to Oregon western redcedar (Thuja plicata) is the signature tree of the Pacific Northwest temperate rainforest. It has mythic importance to native people, as entire civilizations were sustained, in large part, by this species. Natives of the Pacific Northwest regarded the species as a “Long Life Maker” (Stewart 1984) because they used it for canoes, paddles, houses, roofs, clothes, bedding, rope, cooking, and even medicine. Few giant trees were actually felled before the arrival of Europeans because old snags were usable for many years after death. Highly resistant to rot, the snags or parts of live trees would be harvested instead of the entire live tree. After building a dugout canoe from a tree, Lewis and Clark named it “arbor vitae,” Latin for “tree of life” (Arno 2007).

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