Learn how to create a grass in Blender, using particle systems (and some tricks). Feel free to share!
How to Create a Grass in Blender: A Few Tips
After you created one grass clump, everything else can’t be easier. Just copy-paste it and change the geometry slightly, using Proportional Editing.
Grass and Lighting
There is a trick to illuminating the grass – use 3-4 Sun Lamps with variable size. One with a small size to make a sharp shadows (and provide definition). And other with increased size to fill in the darks with more dispersed, ambient lighting.
Nature loves chaos. Uniformity of the particle distribution kills the effect. To break up the repetition you can control density and size of a Particle System using Particle Textures.
Final Render of the Grass Field (Download the Scene)
If you feel like reading, the text version can be found in 3dArtist magazine.