The Southwest is full of simple pleasures for RVers, like pretty pink sunsets and wide open vistas. But lurking beneath those heavenly skies is a deadly hodgepodge of dangerous desert plants RVers can get sick and even result in death.
These plants aren’t the perfect plants for RV living. Before heading out on a desert stroll this winter, get to know these toxic plants or it could be your last.
Buttonbush (Cephalanthus Occidentalis)
The Buttonbush plant grows in riparian wetlands, swamps, ditches, and floodplains. You’ll find it in California, Arizona, and Texas.
When circumstances are right, this 10-foot tree produces fragrant white flowers about 1.5 inches wide and resembles white pincushions.
Although waterfowl and mammals eat Buttonbush seeds, if you eat the flowers you’ll ingest the poison cephalothin, which causes vomiting, convulsions, and paralysis.
“Teddy Bear” or “Jumping” Cholla (Cylindropuntia fulgida)
The species Teddy Bear or Jumping Cholla appear as cotton but like many things in the desert, looks are deceiving. The slightest bump will knock spiny segments loose.
Each Cholla cactus needle contains hundreds of microscopic scales that resemble porcupine quills. Each needle can individually burrow into the skin and make removal painfully slow. Keep away at all costs.
New Mexico Locust (Robinia neomexicana)
Any plant that contains the word “Locust” is bound to be sinister. This dangerous desert plant RVers often encounter is no exception.
The perennial deciduous tree grows throughout Arizona from sunny canyons to mountain riparian areas to coniferous forests. Lovely pinkish flowers bloom on the tree in late spring and early summer. When the flowers dry up an ugly brown, hairy bean pod takes over. Just one bite of the seeds contained within those pods can kill a child or animal.
Desert Thorn-Apple (Datura Discolor)
This bushy Southwestern plant appears fragile at first glance, but don’t let the white trumpet flowers fool you. It’s loaded with poisonous and toxic tropane alkaloids that can kill if ingested. As a member of the Deadly Nightshade Family, Desert Thorn-apple grows in all four Southwestern deserts in elevations from sea level to 2,500 feet.
Poodle Dog Bush (Eriodictyon Parryi)
If you think poison oak is bad, wait until you make contact with the Poodle Dog Bush. This six-foot tall shrub is commonly seen in the Southern California desert mountains.
It has pretty bell-shaped purple flowers, but don’t get too close. Its foul smell is the first clue that it’s a plant to be avoided. Like poison oak, just one short brush with the sticky leaves on this plant can result in painful skin blisters that last weeks.
If you catch it, don’t use topical ointments with benzocaine. This ingredient can actually make the reaction even worse.
Russian Thistle “Tumbleweed”
Tumbleweed is a noxious weed imported by Russian immigrants at the turn of the 19th century.
It has been a bomb-proof pest ever since. Adverse growing conditions like prolonged droughts can boost a tumbleweed’s nitrate levels to amounts lethal enough to cause organ failure. The West’s most recognizable plant can also cause stomach upset, vomiting, tremors, ataxia, seizures, and even death.
Want to know about even more ways the Southwest’s dangerous desert plants RVers can get sick or die from? Visit the Arizona-Sonora Desert Museum, where you can see over 1400 kinds of friendly and dangerous desert Southwest plants.