Considerations when Rendering Green
For those of us doing architectural visualization, our libraries of plant materials are very important. As I have mentioned before, I create my own plant materials, but it is how they are blended into the rendering that is important.
One very important aspect to consider, is the color of green we use in our plants. If using from your library, adjust contrast and shadow to make the plant blend with the surroundings. Then, adjust the color with a color overlay or a curves adjustment layer.
In this example, I adjusted the palm color with a curves layer to make it blend with the early evening sky. I also added some highlights and shadows to the fronds with some sampled colors.