Photo-realistic 3d lawn grass 2 for archviz. It was created using Multiscatter plugin.
Here is a trick: the grass lawn appearence is based on the texture you apply to a ground. This means if you want to get let's say yellowish lawn you need to change the ground's diffuse texture, not the grasses's blades themselves.
The model only consists of 3d geometry (24 grass blades) and no any opacity maps used. It's perfectly seamless and tileable. You just need the multiscatter plugin.
The current ground's dimension is 20mX10.3, but you can change it's size or create your custom ground. Just click on a new surface and get result immediately. Also you can use UVMapping coordinates of the default land model (UVW Modifier is not collapsed).