Alien plantlife covers a group of plants that are highly adaptable to extreme environments. They can be seeded on worlds that have either no or very little life in order to establish vegetation in regions that currently have none. Normally 1,000mu's of alien plantlife is required in order to convert a flat lifeless terrain into a vegetation terrain.
Alien plantlife can only be used on a world that has a breathable atmosphere.
Multiple sectors can be seeded in a single special action although the GM is the final arbitrator on what will be effective.