[NVDave]

Yup. The exotics really seem better adapted in many of these areas and out-compete the natives.

And we’re just going to get more of these exotic invasions into our country with “free trade.”

The single worst thing I can remember seeing up here in Nevada tho was the use of tall whitetop as Baby’s Breath in floral shops. Holy crap, you shoulda seen the dep’t of Ag weed people come unglued. ;-)

[Carry_Okie]

And we’re just going to get more of these exotic invasions into our country with “free trade.”

There's a whole chapter in my book about it.

[Carry_Okie]

BTW, Navarietta species go by the common name "skunk weed." It's appropriate too, a very unpleasant plant. Speaking of which...

Have you ever dealt with spiny cocklebur (Xanthium spinosum)? That's the weed from hell, especially if you ride a horse.