Wetlands has very good density, if I want a full stack I usually sweep through Wetlands and then get the last few in Arathi Highlands. You can also find Kingsblood in any of the following places:
Ashenvale, Desolace, Dustwallow Marsh, Stonetalon Mountains, The Barrens, Thousand Needles, Alterac Mountains, Arathi Highlands, Badlands, Duskwood, Hillsbrad Foothills, Stranglethorn Vale, Swamp of Sorrows, Wetlands, Scarlet Monastery, The Wailing Caverns
The goblin vendor in Wetlands sometimes sells Kingsblood for just over 1 silver per herb.
Edited, Wed Jul 27 05:17:37 2005 by Morthandeus