I believe this is from a movie that was had like 4 mini movies in it. There was this guy and a meteor lands in his back yard, he breaks open the meteor or maybe he just touches it and he has this green stuff that starts growing all over him and everything that he touches. By the end of the movie the guy and his entire house are covered in this green grassy looking stuff.

Creepshow, I love that movie. I think there were 5 mini movies.

The guy with the meteor was Stephen King right