The Toxic Biome is a surface biome found on forest planets. It is here that you can acquire the Toxic Top. The trees here appear to be giant Brugmansia plants. When cut down, they yield Plant Fibres. Unlike other trees that are unique to their mini-biome, they also drop saplings, creating an indefinite source of plant fibres. The grass here also appears a dull purple, which matches with the Toxic Tops. If you're lucky, you can find a Toxic Chest, which will contain blueprints for toxic furniture. Additionally, you will find posionous water in large pools. Lastly, you have a chance of seeing Toxic Flies. They are very similar to the "Growflies" that lurk in the Sewers. They are non-hostile.