If you’re planning on working with foliage. Be sure to read up on and use bent vertex normals so you get proper shading.
://wiki.polycount/wiki/VertexNormal
I know this link mainly mentions Maya and . But I believe there’s now a way to export edited vertex normals out of Blender as well. You may have to dig around a little. It’s been a while since I’ve used Blender.
In general for trees, vertex normals get pointed directly outward from the center of the canopy. With grass and flowers the vertex normals should point directly upward.