Guam seeds can be planted in a herb patch in order to produce grimy guams. This requires a Farming level of 9.
A nearby gardener will not watch over your growing guam.
Guam seeds may be bought from the Vinesweeper minigame for 10 points each, by pickpocketing Farmers and Master Farmers, as a drop from various monsters, and from Managing Miscellania.
When planting a Guam seed, it is recommended to use any type of compost in order to maximise potential yield and to reduce the chances of the patch becoming diseased and dying.
|Time||80 minutes (4x20 minutes)|
|Seeds per||1 seed|
|Chance to save |
The following table shows the profit yield, assuming all the herbs and seeds are purchased/sold at the Grand Exchange, for the guide price. If the herb dies, you will lose -634 coins. Using Supercompost yields a minimum of 5 herbs and maximises profit.
|Healthy Guam plant
||The seed has only just been planted.
||The herb is now ankle height.
||The herb is now knee height.
||The herb is now mid-thigh height.
||The herb is fully grown and ready to harvest.
|This information has been compiled as part of the update history project. Some updates may not be included - see here for how to help out!