Dynamic Grass 🌱

Dynamic Grass includes an Add Collision Object button that enables a selected object to interact with the grass as a collision object. When Use Dynamics is turned on, the grass blades interact with objects and characters in the scene. You can set the Mass of individual blades to influence how they react to forces, and adjust the Brownian Factor to add random movement for more varied grass motion. These controls let you tune how the grass field behaves as objects pass through or rest against it.

Dynamic Grass offers several type options that change the shape of the blades. The default is plain grass, while Wave adds a wavy pattern, Curl creates curled blades, and Braid twists the grass into a braided pattern. Radial spreads grass in a radial direction, and Spiral adds a spiral effect. You can also choose the Hair Type, rendering blades as individual Strands or as flat Strips for a more stylized effect. Together these settings give you room to vary the appearance of a single grass field.

Dynamic Grass uses a one-click setup: select the object you want, then use the Add Dynamic Grass button to create a grass field on it. The addon shows the currently selected object, so confirm the correct one is chosen before adding grass. From there you can adjust Hair Length, set the Grass Count to control density, and add child particles in Simple or Interpolated mode with Child Percent, Randomness, and Stiffness settings. If performance drops in complex scenes, reducing the particle count or subdivision levels can help.

Dynamic Grass provides rendering controls for the look of the blades. Render Subdiv sets the subdivision level for smoother grass, and B-Spline interpolation with adjustable B-Spline Steps produces smoother curves, with higher values giving smoother results. You can also choose whether blades render as individual Strands or flat Strips. In complex scenes, reducing the particle count or subdivision levels is suggested for faster performance, so you can balance visual detail against speed depending on how heavy your scene is.

Dynamic Grass is listed as free in this catalog. Licensing terms can change over time, so check the developer's page on superhive for the current details before you download. The addon comes from Blender Procedural, who list other Blender addons alongside it. A demo video is also available on the developer's page. For questions about usage rights or updates, the developer's page is the best place to confirm what applies to your project.