Grimy guam leaf

A Grimy guam leaf is a herb that has not yet been cleaned to make a guam leaf. Grimy guams may be grown from a guam seed with a Farming level of 9. It is dropped by certain non-player characters. Cleaning a grimy guam requires an Herblore level of 1 and gives 2.5 Herblore experience. Clean guams are used to make Attack potions at level 1, Ranging potion at level 3, Guthix rests (requires 2 clean guams) at level 18. Grimy guams may also be obtained from the Sorceress's Garden minigame.

Obtained from
This herb is extremely common and is dropped by many monsters, including:
 * Aberrant spectres
 * Catablepons
 * Cave crawlers
 * Cave horrors
 * Chaos druids
 * Chaos druid warriors
 * Blue dragons
 * Female H.A.M. members
 * Flesh crawlers
 * Hill giants
 * Hobgoblins
 * Ice warriors
 * Jogres
 * Kalphite workers
 * Killerwatts
 * Kurasks
 * Lesser demons
 * Men
 * Male H.A.M. members
 * Molanisks
 * Moss giants
 * Muggers
 * Otherworldly beings
 * Turoths
 * Vampyres
 * Wall beasts
 * Water elementals
 * White Knights
 * Woman
 * Zombies