Differential Growth provides a geometry nodes setup for simulating organic expansion patterns along curves. The simulation causes curves to grow, fold, and overlap based on adjustable parameters for speed, point proximity, and resampling length. Users can guide the path of the growth by assigning 3D objects to specific collections, allowing the curve to either be drawn toward attractor surfaces or deflected away by container boundaries. The setup includes options to restrict growth to planar or full 3D axes, retain historical iterations of the path step-by-step, and output the final result as either a raw curve or a meshed tube.