Grassify is a procedural geometry nodes setup for generating and animating customizable grass on any object in Blender. It supports both EEVEE and Cycles render engines. Users can control grass placement using weight paint groups or apply it globally. The setup includes settings for customizing grass appearance and wind animation. A high-performance mode allows real-time playback in EEVEE for dense grass, while a high-quality mode calculates individual strand reactions to wind.