
This is what happened to five cars and a semi-truck in Washington. I guess it was something. First you're driving along, then you notice some tumbleweeds rolling across the road, and some more, and at some point you have to slow to a stop, and then there you are under a couple stories of tumbleweeds. You could drive through them but you can't see. You have to call the authorities on your cell phone, and listen to them snorting and hooting at you over at 9-1-1 before they send out the snowplow.
Tumbleweeds have iconic status in the West, and they should, but not necessarily in the way most people think. Here on the range I belong, drifting along with the tumbling tumbleweeds, the man sings; the lonely dead shrubs bouncing along the prairie say Western Expansion as well as anything else. We relate to them. The world is wide, the sky's the limit, we go where the wind takes us, because we are free.

Ah, the romance of the tumbling tumbleweeds! They are synonymous with the great frontier, an ancient spectacle, a natural wonder, rolling free since time immemorial!
In Russia.
Well, boy howdy, guess whut? We didn't have any tumbleweeds at all until 1870, a mere 150 years ago, when they arrived in South Dakota in a shipment of flax seeds from Asia. About as long as we've had kitty-cats, I reckon. We think they've been here forever because we get our information from 20th-century cowboy westerns. The first tumbleweed landed somewhere and grew, and died, and snapped off, and began tumbling, releasing a quarter million seeds all by itself. It didn't need much water to germinate but managed to suck up an astonishing amount of it later, to the detriment of the native plants. It's one hell of a weed: it easily colonizes disturbed areas, and, shoot, we've been disturbing areas as fast as we can. I mean, Disturbed Areas Are Us.

They're a pest. Someone discovered a fungus from Central Asia that does a number on them, and there's talk of setting that non-native organism loose on the buggers here to see who wins. Can't see any downside to that.
So: there's your icon. Invasive non-native species gains foothold and quickly routs the competition, takes over the landscape, and gobbles up all the resources. It's the Great White Dream. What's not to love?
USA! USA! USA!