The Story Behind Los Angeles' Beautiful, Ephemeral Jacaranda Blooms

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Jacaranda season may be brief, but for a short burst of time all of Los Angeles seems to be in purple-blue bloom. Ordinary trees explode in a riotous violet haze. Palm Drive becomes a tunnel; North Whittier a lavender canopy. Stansbury Street is engulfed. The Santa Monica stretch of jacaranda trees from Wilshire to Colorado on 3rd is a designated city landmark, and for good reason.

Technically, there are 49 species of jacaranda trees, but it’s the Jacaranda mimosifolia, also known as the “blue jacaranda,” that is ubiquitous here. They bloom twice a year, once in spring, usually in late May or early June, and again in the fall.

"Vladimir Nabokov is said to have claimed that he could live in Los Angeles simply for the Jacaranda trees."

Like many things intrinsic to the city, jacarandas are not actually native to Los Angeles. The trees are indigenous to South America, originally found in the tropical and subtropical regions of Argentina and Brazil.

In 1944, a scholar visiting from Chicago described “the immense clusters of violet blue flowers” in a scientific journal, explaining that an illustration of a Jacaranda mimosifolia flower on the facing page was “made from specimens collected in the environs of Los Angeles where this tree is widely grown for its beauty.”

Have you ever heard a more L.A. thing? One can only imagine what those weary midwesterners must have thought of us, we Californians, who grew things just for their beauty. Vladimir Nabokov is said to have claimed that he could live in Los Angeles simply for the jacaranda trees.

There were 148,530 jacaranda trees in the city, as of 2010. Mature jacaranda trees can reach 25 to 45 feet, with an oval canopy spread almost as wide as its height. Up close, the trumpet-shaped flowers are an inch or two long, and usually five-petaled. From afar, they are a fairytale, a free-pass to a foreign land.

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(Photo by 

Chris Eason

 via the Creative Commons on Flickr)

“They make a huge visual impact,” Elizabeth Skrzat said in a phone call. “They’re absolutely gorgeous, and people respond to that.”

Skrzat directs City Plants, a public-private partnership that works with the city to expand L.A.’s green canopy and plant street trees.  “We get a lot of requests for [jacarandas to be planted],” she said.

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1822 illustration (Image via Wikimedia Commons)

According to Frank McDonough, a botanist at the Los Angeles County Arboretum, the jacaranda bloom has been especially profuse this year.

“We had an evenly cool winter,” he explained, “followed in March by warm temperatures and somewhat significant rain and then—boom—warm weather right after that, which does interesting things,” McDonough said.

“I’ve seen them since I was a kid,” he told me with a whiff of nostalgia. The botanist was born and raised here.

The fall bloom is shorter and less certain, dependent on temperatures. According to McDonough, in years with strong Santa Ana winds, which coincide with bright sunlight and “heat everything up,” the jacarandas are less likely to bloom. Surely there is some poetic symmetry to that, the trading of one element of mythic Los Angeles for another.

The exact timing of either bloom is as difficult to predict as the blossoming of any single tree. Even at the height of the spring surfeit, no two streets will flower on exactly the same schedule. "They’re like humans, and each tree has its own temperament,” a representative from the Bureau of Street Services explained over the phone one day last month.

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(Background photo by David McNew/Getty Images)

“A Southern Californian would still know that it was wonderful to be alive merely for the jacaranda,” a Los Angeles newspaper columnist wrote more than a hundred years ago. It remains true today.

So, how exactly did the jacarandas get here? Accounts of their original point of entry differ. As McDonough told me, "when exactly they came, nobody really knows.”

He posits that it’s possible they first arrived in California during the Gold Rush. Most of the schooner ships making their way west stopped in Buenos Aires, where they would have witnessed the glory of a jacaranda tree in bloom. McDonough explains that they may have “brought seeds or clippings” with them to California. It’s also possible that freight tycoon Phineas Banning had the trees shipped in to his Wilmington estate from the Amazon in the late 1860s.

Still, in 1868, Reverend James C. Fletcher, a scholar of Brazil, would write that their lilac blossoms were rarely seen north of the equator except in “small specimen-pieces.”

All that would change in the new century. “The flowering jacaranda, which in June showers its purple blossoms on the passerby, has come as an ambassador from the Amazon to proclaim the magnificence of that court,” Lannie Haynes Martin wrote of Southern California in 1912.

By 1916, naturalist Charles Francis Sanders would write that driving Foothill Boulevard (the precursor of the 210 freeway) was “nothing short of entrancing” when “the jacaranda trees are a cloud of blue,” and by 1920, the L.A. Times would call the trees, now “not uncommon,” the “finest foliage of any used for street planting.”

And for their profusion, we have but one person to thank, a pioneering woman who was arguably the Johnny Appleseed of not just jacarandas, but a host of other iconic Southern California flora.

Her name was Kate Sessions and she spent more than 50 years importing seeds and plants into Southern California. She is credited with introducing and popularizing more than 143 species in Southern California, including our beloved bougainvillea, birds of paradise, yellow oleander, star jasmine, and, of course, jacaranda trees.

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Kate Sessions (Photo via 

Women's Museum of California/YouTube

Sessions was born a native Californian, a rare breed in 1857, though perhaps not as rare as a woman receiving a degree in the sciences, which she did from Berkeley in 1887. Her father and his three brothers had arrived in San Francisco at the height of Gold Rush to try their luck out west. At six, she moved across the bay to Oakland, then “a small village with lots of open space.”

It was a good place for a girl to fall in love with the natural world. As a teenager, Sessions made a hobby of collecting flowers, drying and pressing them. For her 15th birthday, her mother gave her a black leather-bound notebook for preserving her specimens.  The young Sessions spelled out the word “Herbarium” carefully in leaf fragments across its cover. Today, the book resides in the San Diego Natural History Museum.

After Berkeley, Sessions worked as a teacher, then the only acceptable line of work for an educated young woman. She moved south to San Diego, and after a short tenure in the classroom, she left to do what she loved most—study and grow plants.

“Her mind,” as San Diego historian Clair Crane once said, “was blank to everything except horticulture.” Sessions discovered that here in California, under the great western sun, things could grow that would never survive back east. She sought out plants that needed little water, and began to introduce many of the tropical species that had first caught her eye when she travelled to Hawaii at 18, along with exotic plants and trees from Latin America and others parts of the world that would be suitable for the Southern California climate and landscape.

Sessions opened her first nursery San Diego nursery in 1885. Then 28, she would soon become the leading plant dealer in the area, her rise coinciding with a time of explosive growth in the region. Through her nurseries (she would own a succession of them, in Coronado, City Park, Mission Hills and Pacific Beach), Sessions wielded enormous influence over the physical character of the rapidly developing residential areas of San Diego and its environs.

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As environmental historian Vera Norwood explained, families moving into the area “looked not to landscape architects as much as to the local nursery owner to help them design and plant their grounds,” and, as Norwood wrote, “hardly any homeowner landscaped her yard without the advice and plants of Kate Sessions.” But Session’s legacy, according to the San Diego History Center, is most visible through her role as “Mother of Balboa Park.” New York has Central Park, London has Hyde Park, and, thanks to Kate Sessions, San Diego has Balboa Park as its crown jewel.

Influenced by the growing parks movement across the country, San Diego had had the foresight to set aside 1,200 acres in its center for what was then called City Park, but the city lacked the resources or wherewithal to develop it. By 1889, “the large vacant tract had become something of an attractive nuisance,” with scattered trash, stray animals, and a “pest house” within its bounds.

Desperate for space to expand her growing nursery business, Sessions struck up an enterprising deal in 1892: she would take over 32 acres of land in the northwest corner of the barren mesa, and in exchange for rent, she’d plant a hundred trees a year in the park, and make an additional 300 trees available to be planted around the city. The arrangement continued for a decade, with Sessions furnishing the city with an approximate total of 4,000 trees, including many of her exotic favorites, and, to some degree, inventing Southern California as the tropical Eden we know today. As her acclaim grew, her influence rippled outward from San Diego.

As Gabe Selak, public programs manager at the San Diego Historical Society explained, “a lot of what we have today—the lush and tropical experience you have when you come to Southern California, didn’t look like that [before her influence].”

At one point, a list was made of all the plants Sessions either introduced or popularized and made widely used in Southern California. It ran four pages long.

Sessions died in 1940 at 82. She reportedly requested a death bed visit from then-San Diego City Planner Glen Rick in 1940. He was in the midst of developing the 5 freeway, and she wanted to tell him what sort of things ought to be planted alongside it.

Jacarandas, like many of the plants Sessions introduced, were soon planted across the Southland, painting streets and skies purple from San Diego to Santa Barbara. According to McDonough, they became truly popular in Los Angeles during the 1920s and ‘30s, and their population further swelled during the middle of the century."

The 1950s and ‘60s saw a concerted effort directed toward planting more street trees, alongside “the population and commensurate building boom that was occurring,” according to the Bureau of Street Services, who report that from 1946 to 1970 the street tree population in the city more than doubled from “perhaps 300,000 trees” to approximately 680,000.

According to Elizabeth Skrzat of City Plants, street trees serve a number of useful purposes, including energy efficiency (shading homes and buildings, which then require less energy to cool), stormwater capture, and a role in combating the urban heat island effect. As “moderate” water users, jacarandas do well in our climate, and they are also tall enough to provide some energy relief.

Interestingly, as Huell Howser pointed out in an episode of California’s Gold, despite their prevalence in Southern California (along with Australia, South Africa, and of course, South America), jacaranda trees are rare to be found across the rest of the U.S.

Howser, dedicated one of the show’s final episodes to the trees, and the question of whether they are “mess” or “miracle.”

Though the tree’s appreciators far outweigh the detractors in number, both camps seem to harbor their opinions with an intensity. Jacaranda foes complain of the trees’ endless violet litter, left behind as their petals soil streets and sidewalks, gumming up car windshields and sneaker soles.

“People love them or hate them,” I heard over and over again in conversations with friends, botanists and representatives of city agencies.

Gene Sherman, in a 1960 entry of his fantastic L.A. Times column Cityside, addressed this very quandary. “We’ve been getting a lot of complaints,” he quotes Bob Talmadge, a tree inspector with the city Park Department as saying.

“People complain about the flowers. They fall down and then the kids track them into the house. And wall-to-wall carpeting being as important as it is today, you know...” Talmadge told Sherman. You know?

In the half century since Sherman’s column ran, we’ve put a man on the moon, eradicated smallpox, invented the internet and seen the Soviet Union fall. Wall-to-wall carpeting may no longer be in vogue, but some things, it seems, never change.

“A lot of people enjoy their beauty and shade, but we do get complaints in certain times of the year,” a tree surgeon with the city’s Department of Urban Forestry told me in 2016.

“When it’s flowering, people complain about the fact that they walk through them and then they walk inside the house and stain the carpets,” he said.

But the pooling of the purple petals that infuriate so many? “In my opinion,” McDonough said, “that’s one of the most beautiful parts of the tree. When they’re all on the ground, you sit around and you’re surrounded by them.”

As Skrazk put it, “very few people have neutral feelings about jacaranda trees.”

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What exactly makes their blossoms so bewitching? Part of the magic must be their hue.

Blue as a color is rarely found in nature—less than 10 percent of the world’s 280,000 species of flowering plants have the ability to produce blue flowers.

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(Photo by David McNew/Getty Images)

As horticulturist David Lofgren told the L.A. Times in 2008, “Blue is a very difficult color to achieve in botany.”

”They don't serve more than for the purpose of eye candy, but we as humans are inherently drawn to color,” he said. “Why is it that we pay more for a color TV than for one that's black and white?”

But all the city is in Technicolor, and we have never been short been short on rare and lovely things. Surely, there must be something more to their spell.

Here, you can sit at the edge of a swimming pool in the dead of winter and find it nearly impossible to ascertain the time of year or the age of the women sitting next to you. It could be January or June, and they could be ingenues, or old enough to be your mother.

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Los Angeles, 1941: Mr. Nelson and his jacaranda tree. (Photo by 

Charles W. Cushman

There are no seasons here, they say, no way to separate the days. How does one calibrate time when history is liquid and seemingly lived in the ageless present?  Somewhere, likely in the basement of some talent agency, there must be a pile of Faustian pacts stacked a mile high.

"The terrible thing about LA," Orson Welles once said, "is that you sit down, you're 25, and when you get up you're 62.”

In a city of eternal sunshine, what could be more seductive than impermanence? Our eyes can adjust to all the evergreen beauty Los Angeles has to offer; stay here long enough and you’ll take it all in without even blinking. But the jacaranda trees?

Blink and you’ll miss them. In fact—look up!—they’re already almost gone.

As Raymond Chandler, a master of not just sunshine and noir, but also the perfect simile, put it in an early story, “Beautiful hands are as rare as jacaranda trees in bloom, in a city where pretty faces are as common as runs in dollar stockings.”

"It’s the kind of tree you feel nostalgic for even when you’re standing right in front of it,” a San Diego horticulturist wrote.

Their purple pageantry is the closest thing we have to seasons, to any season at all. They dazzle us and then disappear.

And, as we look up at the space that was briefly purple and is now just sky, we Angelenos feel the rarest thing of all: time passing.

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Jacaranda seeds (Photo via Wikimedia Commons)

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