Other common issues

How to draw grass on the selected face?

Hold Shift to lock the selected faces. Then when you use the brush, it will only draw within the selected faces.

If you are using the Scatter tool, when you hover the mouse over the material you want to scatter, the material will be highlighted, and you can click to scatter it within the selected faces.

Why can't I scatter grass/generate grass on the model?

Please check the model face before scattering/using grass material template. The scattering tool and the grass material template generation are only available for the front side of the model.

In Sketch Up

In D5