Clean fellstalk

Clean fellstalks are often combined with morchella mushrooms to make prayer renewals, which restore your prayer slowly over 5 minutes. Clean fellstalks can be purchased from Fernahei's herblore shop, in Neitiznot South, for 150 gp. Since there is no way to get grimy fellstalks in game, there is no requirements to clean them. It is also impossible to farm them.