The word “silk” is a lot like a big red flag.
For years, scientists and law enforcement have been warning about the threat of this “shemale” silk plant from China.
Now, they say, it is getting worse.
Here’s what you need to know about the silk-stalkings epidemic.
More from National Geographic magazine: The Silk Scar: Why Silk and Silk Stalkings are Threatening the Future of Your Future Now Playing: What Is Silk?
Here’s What You Need to Know About the Silk Scar Now Playing; What Is a Silk Scar?
Here is what a silk stalk looks like: Now Playing Silk Stalks: Why You Should Not Buy the Chinese Silk Now Playing From Silk to Silk: What You Should Know About Silk from Silk to the Silk: Silk to a Silk-Stalked Cow Now Playing How to Treat Silk Stings: The Most Common Symptoms of Silk-Wound Stellings Now Playing The Most Dangerous Stalk of Silk in the World Now Playing Why Silk Stalker Plants Are Everywhere Now Playing What Is the Silk-Scar?