A Grimy marrentill is a herb that has not yet been cleaned to make a Clean marrentill. Grimy marrentills may be grown from a Marrentill seed with a Farming level of 14. It is dropped by certain NPCs. Cleaning a Grimy marrentill requires a Herblore level of 9 and gives 5 Herblore experience. Clean marrentills are used in the making of Anti-poison potions at level 13 Herblore and Guthix rest teas at level 18 Herblore, as well as to light incense burners in Player-owned houses. Grimy marrentills may also be obtained from the Sorceress's Garden minigame.
Cleaning grimy marrentill yields a profit/loss of 32 coins per herb.
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