Attached Link: Enhance C "enhanced" lawn.

Hmmm, plug-in? Could it possibly be DCG's EnhanceC texture plug-in for Carrara? If so, it is one of the most versatile plug-ins I've ever played with. You can design spaceship hull panels, plasma vortices, or, as I did in my last gallery pic, use it on a tiling bitmap to add randomness. It isn't just for spaceships; it works great on lawns too. ;-)