Why are Joshua Trees in Nevada so mysterious?

Joshua Trees and the Nevada desert

Joshua Trees are not really trees. They are a type of yucca plant, a succulent. They are part of the Agave family. Joshua Trees grow in the Mojave Desert and large parts of southern Nevada. This hot, dry climate is ideal for them. They stand tall and many have twisted arms that point in different directions. Some grow only a few feet high. Others can reach 40 feet! Each Joshua Tree looks different. Some look like giants that have frozen in the middle of a dance.

Where to see Joshua Trees in Nevada

In Nevada, you can find them in places like the Wee Thump Joshua Tree Wilderness and the Desert National Wildlife Refuge. The road to the small town of Pahrump passes through a thick forest of them. The Joshua Tree Highway (Nevada State Route 164), near Searchlight, is another good place to find them. Here, the Joshua Trees grow in thick groups across the desert floor.

The strange botany of Joshua Trees

Joshua Trees grow very slowly. In their first 10 years, they may grow just a few inches. After that, they grow about three inches a year. Unlike many trees, they do not have growth rings. Instead, scientists look at their height and branches to estimate their age. Some Joshua Trees in Nevada may be hundreds of years old. Their flowers are pale and waxy. They bloom in springtime, but only if the winter has been cold enough. The blossoms depend on a special moth called the Yucca Moth. Without this moth, the flowers would never turn into seed pods. Plants and insects need each other to survive.

A landscape shaped by climate

Nevada’s Joshua tree forests show signs of climate change. Scientists estimate that thousands of years ago, these plants grew in places much cooler and wetter than today. As the Earth warmed, the Joshua Trees moved higher and farther north. Today, they survive in the driest deserts of North America. Scientists worry about the future of Nevada’s Joshua Trees. If the desert gets hotter, the young Joshua Trees might not survive. Fires are also a danger to them. Unlike many desert plants, Joshua Trees do not grow back easily after being burned in fires. This makes Nevada’s Joshua Tree forests precious and fragile.

Mysterious giants in the desert

There are two main kinds of Joshua Trees. One grows mostly in California. The other, shorter and bushier, grows in Nevada. Those in Nevada often bend low before growing upward. Some people say this makes them look like dancers bowing to the desert. Their roots can stretch far to find water. Their roots may reach 30 feet deep. Desert animals rely on them. Birds nest in the branches. Lizards rest in their shade. Native people used their tough leaves for baskets and sandals. The wood, though soft, was burned for fuel.

When you walk through a Joshua Tree forest in southern Nevada, it can feel like stepping into another world.  Each tree seems to be whispering a secret about the desert and its past. If you ever find yourself in this part of Nevada, take some time to see these unusual trees for yourself. You might just feel the same wonder that others have felt for centuries.