Joshua Tree (Yucca brevifolia)

The Joshua Tree was named for the biblical character by the Mormon Setters as they crossed the Mojave Desert in the mid 19th century.  It is told that the tree reminded the early Mormon’s of Joshua who, much like the tree, held his hands up in prayer.  From these humble beginnings, this tree and its undulating shadows have become of an icon of the desert southwest.

Joshua Tree located in the Mojave National Preserve.
Joshua Tree located in the Mojave National Preserve.
Natural distribution of Yucca brevifolia - U.S. Geological Survey - Digital representation of "Atlas of United States Trees" by Elbert L. Little, Jr.
Natural distribution of Yucca brevifolia – U.S. Geological Survey – Digital representation of “Atlas of United States Trees” by Elbert L. Little, Jr.

Joshua Trees are found in the desert southwest at elevations between 1300 and 5900 feet.  A member of the Yucca family, the Joshua can live several hundred years and grow up to 30 feet tall and have a trunk up to 3 feet in diameter.  The tree trunk contains many small fibers and does not contain growth rings as with typical trees.  A top heavy branched tree it can develop an impressive and deep root system which can reach 31 feet deep.

Joshua Tree Bloom are found in the spring month in the Mojave National Preserve. Photograph by James L Rathbun
Blooms are found in the spring month in the Mojave National Preserve. Photograph by James L Rathbun

During the spring months of February, March and April, white flowers signal be beginning of spring for the Joshua Tree.  Flowering is dependent upon both an adequate amount of rain and a freeze.  Once flowered, the Joshua Tree is dependent upon the Yucca month for pollination.

New trees can develop from the roots of existing tree from Rhizomes, however the Yucca moth is required to create new stands of trees from the seeds.

This yucca plant inspired a National Park in Southern CA, which is a favorite location to visit.  The symbol of the high desert, the tree is the name sake of a famous Irish rock band, which is also a favorite.

Bristlecone Pine (Pinus longaeva)

Blown by wind, and ravaged by time, the Bristlecone pine tree is a silent sentinel of the White Mountains in eastern central California.  Only growing high in subapline mountains, Bristlecone pine trees are among the oldest living organisms, reaching ages of 5000 years old, with on specimen being documented at 5,067 years old by Tom Harlan who aged the tree by ring count.  That calculation confirms this one individual tree to be the oldest living non-clonal organism on the planet.

A Bristlecone Pine (not the oldest) located in the White Mountains, CA
A Bristlecone Pine (not the oldest) located in the White Mountains, CA

The Bristlecone pine groves are found between 5,600 and 11,200 ft of elevation on mountain slopes with dolomitic coils and can be reached using the White Mountain Road.  This harsh alkaline soil gives the Bristlecone a competitive advantage because over plants and tree are unable to grow.  The trees grow very slowly due cold temperatures, arid soil, wind and short growing seasons.

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Beavertail Prickly Pear (opuntia basilaris)

The Beavertail Prickly Pear cactus (opuntia basilaris) is very common in the desert south west, and would go most of the year most of the year without a second glance.  However this species of cactus exemplifies the best of what the desert has to offer in one symbol.

Beavertail Prickly Pear. Photograph by James L Rathbun
Beavertail Prickly Pear. Photograph by James L Rathbun

The Beavertail Prickly Pear grows in clumps, low to the ground and grows horizontally rather than vertically like the iconic saguaro.  The dull greenish grey leaves grows feature a complete lack of spines and a shaped which gives the plant it’s name.  The pads of this cactus lake the spines traditionally associated with cactus, but rather the pads are covered with minuscule, gray-blue bristles which feature barbed tips which easily puncture human skin.

Each spring the cactus puts on a display of wild flowers which is amazing to behold in the arid desert environments.  Typically starting the March, each cactus pad my put out several shoots which Colosseum in a burst of colors, most commonly a vibrant pink but also known to be yellow, white or rose colored.

Beavertail Cactus found off the Mormon Wells Road, Las Vegas, Nevada
Beavertail Cactus found off the Mormon Well Road, Las Vegas, Nevada

The cactus typically grows in  rocky , sandy plains, valleys, washes & canyons  all over Arizona, California, Nevada, Utah and Northern Mexico.

Spreading Phlox ( Phlox diffusa )

Spreading Phlox ( Phlox diffusa ) is a perennial shrub with small needle like leaves.  This is a small white flowering plant prefers alpine, sub-alpine environments and rocky or sandy soil.  This is a low growing plant which is commonly only two to eight inches tall which probably offers survival advantages when confronted with the harsh landscapes of sub-alpine and alpine environments, in which it thrives.

Photographed in the White Moundtains, Phlox diffusa is a small white flowering plant which prefers alpine and sub-alpine environments.
Photographed in the White Moundtains in California Phlox diffusa is a small white flowering plant which prefers alpine and sub-alpine environments. Photograph by James L Rathbun

Spreading Phlox is commonly found and adapted high in the mountains and distributed throughout in the western United States and Canada. This plant employs a tap route, which is ideally suited to capture water deeper under ground and also offers an anchor to help the plant cling to the mountain in high wind conditions. The plant is short, and when in full bloom, the flowers may completely obscure the green needle like leaves from view.

The five petaled flowers range in color from a clean, magnificent white to calming understated lavender or pink color.  

The blooms are typically visible from May to August and a welcome sight to those who hike at elevation.

Desert Marigolds (Baileya multiradiata)

Desert Marigolds located off the Old Mojave Road.
Desert Marigolds photographed near the Old Mojave Road.

Desert Marigolds (Baileya multiradiata) are an abundant and well distributed flower across the desert south west. The name Marigolds are derived from the name “Mary’s Gold” which is to honor Mary, the Virgin Mary, the mother of Jesus.  

As with all members of the Asteraceae family, the Desert Marigold is characterize with individual florets which are arranged so that each flower groups appears to be a single flower. The bright yellow flowers of this annual growing plant will first appear in bloom in early March. The planet may bloom several more times upon subsequent rains brought in my the desert monsoons and thunderstorms.  

It is not uncommon to view the Desert Marigold display until November depending upon the conditions.  A wildly distributed flower, the Desert marigold can be found growing in sandy or gravelly soils. It is quote common to fine them along roadsides, washes, and plains. The elevations they may be found at range from 100 to 6500 feet above sea level and may be found from California, Arizona and Nevada to Texas.

The Desert Marigold can typically survive about two years and it can be poisonous to livestock.

This yellow wild flower is also known as:

  • Desert Marigold
  • Showy Desert Marigold
  • Paper Daisy
  • Desert Baileya