Release date 11 July 2005 (Update)
Members only? Yes
Quest item? No
Tradeable? Yes
Equipable? No
Stackable? No
High Alch 51 coins
Low Alch 34 coins
Destroy Drop
Store price 5 Tithe Farm points
(Farmer Gricoller)
Exchange price 564 coins (info)
Buy limit 600
Weight 3 kg
Super-good for the smallest or largest of plants.

Supercompost is a more potent version of compost and is used in conjunction with the Farming skill. Compost, super compost, and ultra compost reduce the chance of a player's crops becoming diseased whilst growing to rates of 1/4, 1/8, and 1/10 respectively, as well as increasing the minimum number of crops that will be received by the player upon harvest, even if those crops are protected.

There are two methods to make supercompost. The first method is to place 15 suitable organic items (see below) into any of the compost bins that are located next to the allotment patches found around RuneScape. Once the suitable items have been added, and the lid of the compost bin closed, the contents will begin to rot, taking approximately 90 minutes until completion. During this time, the player may not open the compost bin or add any more items. Once the super compost has finished rotting, the player may open the compost bin and extract all of the super compost by using a bucket on it. Each bucket of super compost collected by the player will grant that player 8.5 Farming experience. When used on a farming patch, each bucket will grant an additional 26 experience. The second method is to use a Compost Potion on regular compost. Besides, a player can also use a compost potion on a filled compost bin containing regular compost to turn it into supercompost.

As a rule of thumb, supercompost should only be used on farming patches that produce a valuable harvest (such as high-level herbs) and/or provide significant experience for each item harvested (such as watermelons). Supercompost cannot increase the yield of trees, fruit trees, or bush patches. Therefore, it is not recommended to treat those patches with supercompost if you plan to pay a gardener to watch over them, since there is no benefit other than the extra 26 experience granted.

If the player has finished the quest Garden of Tranquillity or have enough points in Nightmare Zone, they can use a dose of compost potion to turn regular compost to supercompost either on bucket (1) or compost bin (15).

Supercompost can also be purchased with reward points from the Tithe Farm minigame, costing 5 points per bucket.

Players can add two volcanic ashes to a bucket of supercompost to obtain ultracompost, or put 25 volcanic ash in a full compost bin that contains supercompost.

Suitable itemsEdit

Item Cost to Fill
Pineapple Pineapple 2,565
Watermelon Watermelon 240
Coconut Coconut 5,040
Papaya fruit Papaya fruit 3,660
Mushroom Mushroom 3,990
Poison ivy berries Poison ivy berries 5,385
Jangerberries Jangerberries 3,150
White berries White berries 8,445
Toadflax Toadflax 38,700
Avantoe Avantoe 28,545
Kwuarm Kwuarm 27,000
Snapdragon Snapdragon 130,920
Cadantine Cadantine 20,895
Lantadyme Lantadyme 23,895
Dwarf weed Dwarf weed 15,645
Torstol Torstol 161,355
Oak roots Oak roots 675
Willow roots Willow roots 510
Maple roots Maple roots 795
Yew roots Yew roots 3,135
Magic roots Magic roots 29,565
Calquat fruit Calquat fruit 1,785
White tree fruit White tree fruit Not sold