I have spent a few hours looking for how to re-scale my custom material so it looks more like .. uh .. grass, and not giant green straws. However, I seem to have a bit of a problem locating a place to do so. As it's a terrain, I can't select surface properties, and in the terrain properties, I can't seem to find any way to scale it. I tried importing the texture with different resolutions, but that only made it worse. =/
I have a feeling there's a rather obvious solution to this, but it keeps eluding me.