@moodflow: There is no grass population in the picture. The effect is made with layers. The strukture is as follows:
Base colours (standard)
Grass (dark green) Coverage: 1 (Fractal breakup: standard) (alt./slope constr. as you like)
- Grass (light green) Coverage: 0.3125 (Fractal breakup: standard)
- Flowers (yellow) Coverage: 0.2 (Fractal breakup: (func.) 1.975)
- Flowers (pink) Coverage: 0.13125 (Fractal breakup: (func.) 0.8125)
- Flowers (white) Coverage: 0.13125 (Fractal breakup: (func.) 0.5)
That's all .... And then, after rendering, a little bit photoshop (contrast, sharpening)