yes. check the knowledge base on the runescape site, it lists what can be turned into supercompost edit: here it is The following can be placed in compost bins to produce supercompost: * All tree roots. * Pineapples, watermelons, coconuts and papayas. * Bittercap mushrooms. * Poison Ivy berries, jangerberries and whiteberries. * Avantoe, kwuarm, snapdragon, cadantine, lantadyme, dwarf weed, torstol and toadflax.