[quote=WilsonTurner]
If you search 'poison grass,' you won't find it. I've already left a message for my grandma [she's 70+ and she's taking care of her half of the ranch better than we are, and voluntarily] inquiring after the name. However, it IS real. I assure you it is, I am not making it up. If I wanted to make anything up, it would be Bovril, that adorable little creature trying on the mustache in the interest check.
[/quote]

If we're going UNCOUNTERABLE NATURAL DEFENSES, then why shouldn't we all have some kind or another? That's just silly. You don't see me saying I'm surrounded entirely by tundra that will freeze people from the feet up if they walk on it, but there's a well-defended highway for people to use instead. A lot of it is a balance issue. Even if this stuff is real and even if it wasn't GM, it'd still wreck the balance because you're essentially in an unassailable fortress.