Notes: There are only three ways of getting this potion. One way is getting one as a reward from the Garden of Tranquility quest the second way is by killing zombies in Tarn's lair, and the third option is as a reward from the Vinesweeper Minigame. You will get a 4 dose potion if you get it as a quest reward and only a 1 dose if you kill zombies. This potion will turn either a bucket of compost or a bin of compost into super compost. Obviously, the best use would be to use it on the bin so that it makes 15 buckets worth of super compost.