The hook
The Joshua trees only grow where the Mojave meets the Colorado desert, and this is the park built around that line: eight hundred thousand acres of them and the granite climbers come from everywhere to touch.
01Why it's worth it
Joshua Tree sits on the seam between two deserts. The higher, cooler Mojave in the west is where the Joshua trees grow, thousands of them, spiky and crooked and unlike any other plant, standing over fields of tan monzogranite piled into domes and jumbles. The lower Colorado Desert to the east is starker, all creosote and cholla and open ground. The rock is the other draw: more than four hundred formations and thousands of routes make this one of the great climbing grounds anywhere, and you don't have to climb to scramble it. After dark it goes fully black, a designated Dark Sky Park, and the stars take over. It's nearly eight hundred thousand acres, so it holds the crowds at the famous stops and empties out the moment you walk.
02How to experience it
The main gates are near the towns of Joshua Tree and Twentynine Palms off Highway 62, about two and a half hours east of Los Angeles, and a long day (roughly eight hours) from the Bay. Go in spring or fall; summer heat here kills people, so carry far more water than feels reasonable. Hidden Valley and the Cholla Cactus Garden are the easy classics, Keys View is the big overlook, and any clear night is worth staying for.
The honest note
The superbloom is not an annual event, and planning around it will usually disappoint. The most-shared account of a good year says so itself: "The desert in California looks to be colored by flowers to an unusual degree this year… It's not going to be like this every year." Most Aprils are ordinary.
Summer is genuinely dangerous. Daytime highs well past 40°C with no shade and no water in the park. This is a cool-season destination; going in July is the standard mistake.
There is no water and patchy signal. Carry more than you think, and do not rely on a phone for navigation between the two entrances.
The dark sky is the draw and it needs a moonless night. A full moon washes out exactly the thing most people come for.
From the locals
Asked when they were first left speechless by a place — a question with the whole world available — one traveller answered with this park, and with the sky rather than the rocks: "When I saw the Milky Way for the first time in Joshua Tree. I always thought those galaxy pictures were exaggerated until I saw all the amazing hues, bands, stars, etc. in person. It was truly breathtaking and a moment I still think about to this day."
In a good wildflower year it becomes something else again, and the advice then is to treat the whole desert as one trip: "If you're around in April, make sure you take detours into places like Joshua Tree, Death Valley, Anza/Borrego, Coachella Valley and Antelope Valley."