Raab
From Tardis Wiki, the free Doctor Who reference
The Raab were a plant species that originated billions of years ago in the Odonto Ceti region of space.
Biology
The Raab could grow up to five hundred metres long. They travelled through space and landed on barren asteroids or small moons, the impact scattered their seeds. A handful of the billion seeds survive and grow, consuming all of the sustenance in the area, eventually growing big enough to fire their shoots off into space, out of the low gravity. (EDA: Frontier Worlds)