Thistleshrub Valley (quest)

Thistleshrub Valley is a quest to kill the Thistleshrub in Thistleshrub Valley (south-west of Gadgetzan).

Objectives
Tran'rek in Gadgetzan wants you to kill 8 Gnarled Thistleshrubs and 8 Thistleshrub Rootshapers.
 * 8 Gnarled Thistleshrubs
 * 8 Thistleshrub Rootshapers

Description
Have you ever seen Thistleshrub Valley? It's a mighty dangerous place,.

Those strange beasts there, I don't trust them for a minute! Gnarled thistleshrubs and thistleshrub rootshapers, that's what I think they were called...

Anyhow, I want to get into the valley, but with so many of those thistleshrubs around, there's no way I'm going back there. But here's where you come in—if you clear some of them out, I just might think about going back. What do you think, ? Help me out?

Reward

 * +250 Gadgetzan reputation

Progress
I'd like to take a closer look at that cactus in the valley... So leave some of it in one piece, will ya?

Completion
They're that big? I might have to rethink my plan...

But you did hold up your end of the bargain, so here's what I promised.