Clean fellstalk is a high-level herb, obtained by cleaning a grimy fellstalk, requiring level 91 Herblore and giving 16.8 experience. It is used on a vial of water to make a fellstalk potion (unf), which can then be combined with a morchella mushroom at 94 Herblore to make a 3-dose prayer renewal potion, yielding 190 Herblore experience.
| Herblore level||91|
| Members only||Yes|
|| Restore: prayer points, by up to 516 (Prayer level dependant) over 6 minutes