Oh, it doesn't really matter if they are made sterile or not. If they're not actually made non-infectious by the Precipice then I'll write the reasoning behind why they aren't spreading and Aryan would do everything to ensure compliance. If they are changed so as not to automatically attempt to wipe out any and all life aboard the ship, then that's fine too but not sure how that would work out logistically.

Editing CS with a "How-To Guide to Killing Those Pesky Flora"