Installation

In Blender open Edit, Preferences, Get Extensions, then use Install from Disk and pick the stylized_grass_generator zip.

Usage

1. Open the Grass tab in the 3D viewport sidebar (N). With nothing selected, click the picture to choose a design and press Add Grass Field, or use Shift+A, Mesh, Stylized Grass.
2. To cover your own terrain, select the mesh first: the button Grow on (its name) appears and plants the field on it.
3. With a field selected, the picture switches its design. Surprise makes a new random field, Vary keeps the design and changes its amounts, Colors repaints it.
4. The main page holds Condition, Grass style and tip, density, height, thickness, straightness, Grass Colors, Flowers, Bushes, Wind and Interaction.
5. Interaction: choose Push or Trails, select the objects that should touch the grass and press Add Selected as Colliders, or press Add Rolling Ball for a demo. Trails is a simulation: press Play from frame 1.
6. The sub-panels hold the rest: Field & Ground, Grass Shape, Flowers & Bushes, Colors & Shading, Wind Details, Interaction Details, Performance and Actions (Reset to Design, Make Plain Mesh, Delete).