Seems like this is a pretty bad weed post fire, middle creek is pretty weed free with the exception of this, a small amount of white clover and the odd thistle.
@MichaelMulvaney this plant is everywhere along middle creek post-fire, I would say the number leading up to big creamy flat is between 500-1000 plants. With another 200 or so beginning to take over big creamy flats. I've not seen it in such numbers.