Gleason's Gielinor Guide

Supercompost

Released							11 July 2005 (Update)
Members							Yes
Properties
Tradeable							Yes
Equipable							No
Stackable							No
Noteable							Yes
Options							Empty, Drop
Examine							Super-good for the smallest or largest of plants.
Values
Value							85 coins
High alch							51 coins
Low alch							34 coins
Weight							3 kg
Grand Exchange
Exchange							21 coins (info)
Buy limit							2,000
Daily volume							427,544
View real-time prices
Advanced data
Item ID							6034
Link							MOID

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 4/5.^[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, cactus, 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, add 25 volcanic ash to a compost bin, or add 50 volcanic ash to a big compost bin that contains supercompost, to upgrade it to ultracompost.

Farming info

Supercompost
Level required					1
Farming XP					26 xp
Farming patch					Any un-supercomposted farming patch

Creation

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 also be created by using 3 saltpetre with one bucket of compost.

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.

Requirements
Skill		Level	XP
Farming		1	8.5
Members		Ticks	60 (36s)^{[r 1]}
Tools	None	Facilities	Compost Bin

Materials
Item		Quantity	Cost
	Watermelon	15	270
	Bucket	15	120
Total cost			390
	Supercompost	15	315
Profit			−75
Profit after GE Tax			−75

^ Filling 1 bucket takes 4 ticks, 60 ticks for 15.

Requirements
Skill		Level	XP
Farming		45 ^(b)	8.5
Members		Ticks	120 (72s)^{[r 1]}
Tools	None	Facilities	Big Compost Bin

Materials
Item		Quantity	Cost
	Watermelon	30	540
	Bucket	30	240
Total cost			780
	Supercompost	30	630
Profit			−150
Profit after GE Tax			−150

^ Filling 1 bucket takes 4 ticks, 120 ticks for 30.

Requirements
Members		Ticks	0 (0s)

Materials
Item		Quantity	Cost
	Compost	1	11
	Compost potion(1)	1	2
Total cost			13
	Supercompost	1	21
Profit			8
Profit after GE Tax			8

Requirements
Skill		Level	XP
Farming		1	8.5
Members		Ticks	60 (36s)^{[r 1]}
Tools	None	Facilities	Compost Bin

Materials
Item		Quantity	Cost
	Weeds	15	2,520
	Compost potion(1)	1	2
	Bucket	15	120
Total cost			2,642
	Supercompost	15	315
Profit			−2,327
Profit after GE Tax			−2,327

^ Filling 1 bucket takes 4 ticks, 60 ticks for 15.

Requirements
Skill		Level	XP
Farming		45 ^(b)	8.5
Members		Ticks	120 (72s)^{[r 1]}
Tools	None	Facilities	Big Compost Bin

Materials
Item		Quantity	Cost
	Weeds	30	5,040
	Compost potion(1)	1	2
	Bucket	30	240
Total cost			5,282
	Supercompost	30	630
Profit			−4,652
Profit after GE Tax			−4,652

^ Filling 1 bucket takes 4 ticks, 120 ticks for 30.

Requirements
Skill		Level	XP
Farming		1	2
Members		Ticks	0 (0s)^{[r 1]}

Materials
Item		Quantity	Cost
	Compost	1	11
	Saltpetre	3	12
Total cost			23
	Supercompost	1	21
Profit			−2
Profit after GE Tax			−2

^ Auto-creating is 1, then 4 ticks.

Suitable items

For information about the cost/profit on creating supercompost, see Calculator:Farming/Supercompost profit

	Cost to Fill	Big Compost Bin
Pineapple	2,520	5,040
Tenti pineapple	Not sold
Watermelon	270	540
Snape grass	17,595	35,190
Papaya fruit	25,815	51,630
Coconut	20,145	40,290
Coconut shell	Not sold; no other use
Half coconut	Not sold
Dragonfruit	11,940	23,880
Mushroom	2,970	5,940
Jangerberries	5,895	11,790
White berries	9,870	19,740
Poison ivy berries	3,450	6,900
Toadflax	33,540	67,080
Grimy toadflax	31,605	63,210
Avantoe	29,115	58,230
Grimy avantoe	26,835	53,670
Kwuarm	36,105	72,210
Grimy kwuarm	34,080	68,160
Snapdragon	112,680	225,360
Grimy snapdragon	109,650	219,300
Cadantine	34,185	68,370
Grimy cadantine	32,235	64,470
Lantadyme	19,305	38,610
Grimy lantadyme	17,220	34,440
Dwarf weed	20,220	40,440
Grimy dwarf weed	18,945	37,890
Torstol	51,810	103,620
Grimy torstol	50,685	101,370
Oak roots	1,140	2,280
Willow roots	195	390
Maple roots	330	660
Yew roots	885	1,770
Magic roots	126,285	252,570
Celastrus bark	120,285	240,570
Calquat fruit	1,515	3,030
White tree fruit	Not sold
White lily	7,590	15,180
Ent branch	46,785	93,570

Products

	Skills	XP	Materials
Nature house (Total)	92	3,038	4 × Oak plank 4 × Teak plank 10 × Mahogany plank 1 × Magic stone 1 × Limestone brick 2 × Bucket of water 3 × Supercompost
Nature house (Upgrade)	92	158	1 × Desecrated house 1 × Mahogany plank 2 × Bucket of water 3 × Supercompost
Otherworldly theme	75	316	8 × Supercompost 1 × Blue dye 4 × Mushroom 1 × Magic secateurs
Ultracompost (Direct addition)	1	1.1	1 × Supercompost 2 × Volcanic ash

Item sources

Source	Level	Quantity	Rarity
Zygomite Level 74	74	1 (noted)	6/143
Zygomite Level 86	86	1–3 (noted)	6/146
Earth impling	36; 46	2 (noted)	1/100
Earth impling jar	N/A	2 (noted)	1/100
Callisto	470	225 (noted)	4/126
Vet'ion	454	225 (noted)	4/126
Venenatis	464	225 (noted)	4/126
Ancient Wyvern	210	7–10 (noted)	3/132
Ancient Zygomite	109	2 (noted)	64/590
Artio	320	60 (noted)	4/128
Calvar'ion	264	60 (noted)	4/128
Spindel	302	60 (noted)	4/128
Lunar Chest	N/A	6–12 (noted)	6 × 3/30
Large port reward bag Hosidius	N/A	25 (noted)	Unknown

Shop locations

Seller	Location	Number in stock	Restock time	Price sold at	Price bought at	Change Per	Members
Farmer Gricoller's Rewards	Hosidius	∞	N/A	5	N/A	0.0%

Changes

Date	Changes
10 January 2024 (Update \| poll)	Supercompost can now be created by using 3 saltpetre with 1 bucket of compost.
10 September 2020 (Update)	The Grand Exchange buy limit was changed from 600 to 2,000.
28 April 2016 (Update \| poll)	It is now possible to add compost or supercompost to any farming patch during any growth stage of a crop.
29 January 2007 (Update)	The item was renamed from "Super compost" to "Supercompost".
28 March 2006 (Update)	The item's inventory sprite was rotated.
22 March 2006 (Update)	The item was graphically updated.
26 July 2005 (Update)	An "Empty" option was added.

Gallery (historical)



11 July 2005 ⁠– 22 March 2006	22 March 2006 – 28 March 2006	28 March 2006 – present

References

^ 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:)"
^ 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."
^ Jagex. Mod Ash's Twitter account. 17 July 2018. Archived from the original on 28 May 2020. Mod Ash: "[Does compost increase giant seaweed yield?] Yeah."
^ 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."