Grimy marrentill

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 5 and gives 3.8 Herblore experience. Clean marrentills are used to make Anti-poison potions and Guthix rest teas with a Herblore level of 5 and a Herblore level of 18 respectively. Grimy marrentills may also be obtained from the Sorceress's Garden activity.

Obtain from
Note: this list is incomplete. This herb is dropped by the following: ]]
 * Aberrant spectre
 * Armoured zombie (common)
 * Cave horror
 * Banshee
 * Cyclops
 * Catablepon
 * Cave crawler
 * Chaos druid
 * Cockroaches
 * Flesh crawler
 * Green Dragon
 * Hobgoblin
 * Hill Giant
 * Ice warrior
 * Kalphite worker
 * Killerwatt
 * Kurasks
 * Lesser demon
 * Men
 * Moss giant
 * Mugger
 * Mountain troll
 * Otherworldly being
 * [[Skeleton|Skeleton
 * Sorebones
 * Suqah
 * Turoth
 * Vampire
 * Zombie
 * Earth warrior

It can also be stolen from members of H.A.M..