Simply Head to the Ruined City in Val'Shara Around 63,41 and make sure you have Dreamweavers Shoulder Enchant and 100+ Herbalism but not required but the higher the skill the less junk you get from herbing the mobs you kill.
So Kill and Herb Trees and Herb plants that spawn along with the bags that drop Herbs which has chance to drop Felwort ,along with Artifact Power Items.
Happy Farming
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