Supercompost

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Supercompost detail.png

Supercompost is a superior version of compost that is used in the Farming skill to reduce the chance of a farming patch becoming diseased per growth stage by 6/7[1]. When used on a farming patch, each bucket grants 26 Farming experience.

In addition, it also increases the minimum yield and maximum number of harvests received from allotments, hops and herbs[2]. The minimum number of herbs per harvest increases to 5 (when compared with compost). This also applies to giant seaweed patches underwater[3] and Celastrus bark from a fully grown Celastrus seed[4].

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 does not 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.

Players can add two volcanic ash to a bucket of supercompost, or add 25 volcanic ash to a compost bin that contains supercompost, to upgrade it to ultracompost.

Obtaining[edit | edit source]

To create supercompost, players must place 15 suitable produce (see list below) into any of the compost bins that are located next to the allotment patches found around Gielinor. Once the bin is full, the lid of the compost bin must be closed to allow the contents to rot. This process takes approximately 90 minutes until completion, after which the player may open the compost bin and extract all of the supercompost by clicking on the bin or using buckets on it. Each bucket of supercompost collected grants the player 8.5 Farming experience.

Players may also use a compost potion to create supercompost. One dose of compost potion will change an entire finished bin of compost into supercompost, or one bucket of compost that has already been collected.

Supercompost can be purchased with reward points from the Tithe Farm minigame, for 5 points each.

The Lunar spell Fertile Soil can be used on a patch to apply the effect of supercompost to it without using any supercompost.

Suitable items[edit | edit source]

Item Cost to Fill Big Compost Bin
Pineapple.png Pineapple 2,415 4,830
Watermelon.png Watermelon 240 480
Coconut.png Coconut 28,650 57,300
Coconut shell.png Coconut shell Not sold
Papaya fruit.png Papaya fruit 11,055 22,110
Mushroom.png Mushroom 1,590 3,180
Poison ivy berries.png Poison ivy berries 1,485 2,970
Jangerberries.png Jangerberries 3,870 7,740
White berries.png White berries 5,895 11,790
Toadflax.png Toadflax 24,525 49,050
Avantoe.png Avantoe 29,595 59,190
Kwuarm.png Kwuarm 18,435 36,870
Snapdragon.png Snapdragon 131,175 262,350
Cadantine.png Cadantine 21,780 43,560
Lantadyme.png Lantadyme 21,945 43,890
Dwarf weed.png Dwarf weed 6,855 13,710
Torstol.png Torstol 123,390 246,780
Oak roots.png Oak roots 1,275 2,550
Willow roots.png Willow roots 255 510
Maple roots.png Maple roots 225 450
Yew roots.png Yew roots 1,860 3,720
Magic roots.png Magic roots 40,485 80,970
Celastrus bark.png Celastrus bark 124,965 249,930
Calquat fruit.png Calquat fruit 1,545 3,090
White tree fruit.png White tree fruit Not sold
White lily.png White lily 6,840 13,680

Products[edit | edit source]

ItemSkillsMaterials
px Nature house
  • 92 Construction
px Otherworldly theme
  • 75 Construction
px Ultracompost
  • None

Drop sources[edit | edit source]

For an exhaustive list of all known sources for this item, see here (include RDT).
SourceLevelQuantityRarity
Ancient Wyvern210 Multicombat.png7–10 (noted)3/134
Ancient Zygomite109 Multicombat.png(noted)1/10
Callisto470 Multicombat.png100 (noted)4.75/128
Earth impling jar Hunter icon.png(noted)1/100
This content is present in Twisted League. Earth impling36 Hunter icon.png(noted)1/100
Venenatis464 Multicombat.png100 (noted)4.75/128
Vet'ion454 Multicombat.png100 (noted)4.75/128
Zygomite74; 86 Multicombat.png1–3 (noted)Uncommon

Store locations[edit | edit source]

This list was created dynamically. For help, see the FAQ.
To force an update of this list, click here.
SellerLocationNumber
in stock
Price
sold at
Price
bought at
Members?
Farmer Gricoller's RewardsHosidius5N/AMember icon.png

References[edit | edit source]

  1. Jagex. Mod Kieren's Twitter account. 8 September 2017. (Archived from the original on 28 May 2020.) Mod Kieren: "So with the release of Ultracompost I figured I'd explain how compost affects crops dying. Sorry it is very word heavy! Fire any questions:)"
  2. Jagex. Mod Ash's Twitter account. 24 January 2019. (Archived from the original on 28 May 2020.) Mod Ash: "[Flower/berry/cactus patches] don't depend on the compost state. Allotments, hops and herbs do."
  3. Jagex. Mod Ash's Twitter account. 72 July 2018. (Archived from the original on 28 May 2020.) Mod Ash: "[Does compost increase giant seaweed yield?] Yeah."
  4. Jagex. Mod Ash's Twitter account. 24 January 2019. (Archived from the original on 28 May 2020.) Mod Ash: "Yes, celastrus would be helped by composting."