Below are Herbalism farming routes for Outlands. If you are looking for more information on gold making with herbalism please go to the guide here.
Hellfire Peninsula
Contested ~ lvl 58-63 ~ Mountain Silversage, Golden Sansam, Dreamfoil, Felweed, Dreaming Glory
Zangarmarsh
Contested ~ lvl 60-64 ~ Blindweed, Ghost Mushroom, Golden Sansam, Dreamfoil, Felweed, Dreaming Glory, Ragveil, Flame Cap
Terokkar Forest
Contested ~ lvl 62-65 ~ Felweed, Dreaming Glory, Terocone, Mana Thistle
Nagrand
Contested ~ lvl 64-67 ~ Felweed, Dreaming Glory, Mana Thistle
Blade’s Edge Mountains
Contested ~ lvl 65-68 ~ Felweed, Dreaming Glory, Mana Thistle
Netherstorm
Contested ~ lvl 67-70 ~ Golden Sansam, Felweed, Dreaming Glory, Mana Thistle, Netherbloom, Liferoot
Shadowmoon Valley
Contested ~ lvl 67-70 ~ Felweed, Dreaming Glory, Terocone, Mana Thistle, Nightmare Vine
Patch 3.0.3