Herbalism Guide

Guide Sections:

1 - 50 Peacebloom, Silverleaf, Earthroot
50 - 100 Mageroyal, Briarthorn, Stranglekelp
100 - 170 Bruiseweed, Wild Steelbloom, Kingsblood, Stranglekelp, Liferoot
170 - 210 Kingsblood, Liferoot, Fadeleaf, Khadgar's Whisker, Goldthorn
210 - 270 Purple Lotus, Sungrass
270 - 300 Sungrass, Gromsblood, Golden Sansam, Dreamfoil, Mountain Silversage, Plaguebloom
300 - 325 Felweed, Dreaming Glory
325 - 350 Ragveil, Flame Cap, Terrocone, Felweed, Dreaming Glory
350 - 400 Goldclover
400 - 435 Goldclover, Adder's Tongue
435 - 450 Lichbloom, Icethron

Don't forget you can pick up every herb you see, even if it's green. As you see this is not a "Fast WoW Herbalism Guide 1-450 follow my ways and if you dare to pick up OTHER HERBS YOU WILL DIE IN HELL!" Don't do that, herbs can be sold for money, pick up everything. I usually pick up even the Herbs grey for me, they are good for alts when I want to level Alchemy.

WoW Herbalism Leveling Guide 1 - 450

First, visit any trainer in the main cities of old Azeroth - just ask a guard, and learn Apprentice Herbalism.
[Peacebloom], [Silverleaf], [Earthroot]
Basically just every starter zone, they are filled with Herbs.

50 - 100

Learn Herbalism Journeyman.
[Mageroyal], [Briarthorn], [Stranglekelp]

The Barrens - Yeah thats barrens, the Herb paradise. You won't find any other zone in this Herbalism guide where there are so many herbs as in Barrens.
Silverpine forest
Redridge Mountains
Loch Modan

100 - 170

When you reach 150, go to your trainer and learn Herbalism Expert.
[Bruiseweed], [Wild Steelbloom], [Kingsblood], [Stranglekelp], [Liferoot]

Stonetalon Mountains
Hillsbrad Foothills
Wetlands - the red zone is the best after you passed 150.

170 - 210

Learn Herbalism Artisan.
[Kingsblood], [Liferoot], [Fadeleaf], [Khadgar's Whisker], [Goldthorn]
If you are not on a PvE server, and you are not level 70 yet. Don't go to Stranglethorn Vale. It was filled with level 70 players when I was powerleveling my herbalism last time, and this is not a PvP guide.