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Desert's Joshua trees in rare bloom in Utah, across the West
This is an archived article that was published on sltrib.com in 2013, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

A unique plant named by Mormon pioneers and found only in a limited range of southwestern Utah, as well as California, Nevada and Arizona, has had a boom year for blossoms.

Joshua trees, part of the yucca family, are long-lived and rarely bloom, but reports this spring are of a "blossom boom" across the Mojave Desert.

Washington County resident Ron Olroyd made a trip along Old Highway 91 west of St. George in late March and was rewarded with a visual feast of the blossoms in the Beaver Dam Mountains.

"You better get down there fast," Olroyd said. "It won't last long."

In fact, the rare occurrence has most likely already peaked.

"This is a once-in-a-lifetime phenomenon," Cameron Barrows, a research ecologist with the University of California, Riverside, told the Riverside Press-Enterprise.

Theories for the massive blooming include late-summer storms in 2012, two years of drought, and stress due to global climate change.

Tony Frates, conservation co-chairman of the Utah Native Plant Society, said the blooming around the Joshua Tree National Landmark in Washington County near the Arizona border likely started around March 1, "so they may now be nearing end of their bloom cycle, or could even be past it at this point."

Joshua trees of up to an estimated 1,000 years old have been found in California and are also unique in that moths are their main pollinators.

Yucca brevifolia, the scientific name, earned the common name Joshua tree, as the story goes, when Mormon pioneers crossed the Mojave Desert sometime in the mid-1800s.

Apparently, the trees reminded the pioneers of Joshua from the Bible reaching his hands to the sky while praying.

brettp@sltrib.com

Twitter: @BrettPrettyman

Desert plant • Researchers in the West weigh possible explanations for the "once-in-a-lifetime phenomenon."
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