I’ve seen cowboy movies from the 1950s where the actor said he had to shoot his horse because it ate locoweed. What exactly is locoweed? Were they talking about marijuana? If so, why would anyone shoot a valuable horse for eating a weed whose effects are only temporary?
David Duggan
Shelton, Connecticut
No, locoweed isn’t cannabis. It’s any number of plants found throughout the West, especially the genera Astragalus and Oxytropis. They are commonly found on mountains, foothills, plains

True West June 2019
In This Issue:
Features
Western Books & Movies
To The Point
Departments
- Did Old West Lawmen Carry their own Weapons?
- Did She or Didn’t She?
- Toppenish, Washington
- Did Doc Holliday “Open the Ball” Behind the O.K. Corral?
- Natural Disasters in Ancient Times
- What are the Origins of the Code of the West?
- Prehistoric Americans and Science
- Canyon Springs Ambush
- What History Has Taught Me: Walter Hill
- The Old Pueblo’s Historic Cuisine
- After the Battle for the Alamo, Did Any of the Wives or Children of Crockett, Bowie or Travis Visit the Site?
- Bringing Law and Order
- Old Wrist-Breaker
- Outhouses In Hotels
- Did the Punitive Expedition influence the start of the Immigration and Naturalization Service/U.S. Border Patrol?
- George Catlin Paints the West
- Bad Bill Longley
- What Can you Tell me about Joaquin Murrieta?
- Burial Site: Battle of the Alamo
- Guns That Won the West
- Butch Cassidy Would Do a Double Take
- What Exactly is Locoweed?