Herbalism 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.

• Durotar


• Dun Morogh


• Elwynn Forest


• Teldrassil


• Azuremyst Isle


• Tirisfal Glades


• Mulgore



• Eversong Woods

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.

• Stranglethorn Vale


• Arathi Higlands

210 - 270

[Sungrass], [Purple Lotus]

• The Hinterlands

After 245 you can pick up Ghost Mushrooms in the caves too.

270 - 300

[Sungrass], [Gromsblood], [Golden Sansam], [Dreamfoil], [Mountain Silversage], [Plaguebloom]

• Azsahara


• Felwood

300 - 325

Go to Outland and learn Herbalism Master.

[Felweed], [Dreaming Glory]

• Hellfire Penninsula

325 - 350

[Ragveil], [Flame Cap], [Terrocone], [Felweed], [Dreaming Glory]

• Zangarmarsh


• Terrokar Forest

350 - 400

Go to Northrend and learn Herbalism Grand Master.

Howling Fjord - [Goldclover]

400 - 435

Sholazar Basin - [Goldclover], [Adder's Tongue]

435 - 450

The Storm Peaks - [Lichbloom], [Icethorn]

(Information provided by http://www.wow-professions.com/)