Stormvine

Vashj'ir is a very nice place to farm herbs for Herbalism if you know where to go. I have constructed a route for this, which can be seen here. This route is heavily populated with Stormvine and Azshara's Veil.

Aessina's Miracle: [quest=0] After you've completed this quest and turned it in to Aessina and Arch Druid Hamuul in the Grove of Aessina all the firelands becomes regrowth, IF YOU'RE AN HERBALIST,don't forget to farm the regrowth area after it turns green. There are several nodes of stormvine that pop up where cinderbloom used to be. They respawn pretty quickly and if you choose to stick around (as I did) you can get a lot. I got 4 stacks of Stormvine and 2 stacks of Cinderbloom in 20 minutes (plus about 25 volatile life). You don't have to fight or compete for it - no mobs - It's awesome!(if this was helpful, rate it up)

This herb can be found either at the tops of mountains or at the bottom of the ocean!

I've been playing WoW since Vanilla. Believe it or not ... I also have a doctorate in botany. I've always been impressed with Blizz' attention to detail with the ecology of the plants in the game. Just like in RL, many of Azeroth's plants can predictably found in specific "habitats". E.g. only in marshes, grasslands, mountains, on the edges of lakes or in the ocean. This is a very cool detail that is probably lost on many players.

Whoever was paying attention to these environmental details must have quit for Cata. I can promise you that no plants could grow at the tops of mountains and at the bottom of oceans. Sadness.