For the trees and bushes I used the background of my photo shoot for inspiration. The bushes had a reddish tint which I magnified. Once the dogs are painted I'll know if some of the tree trunks need to be lightened for balance.
In the above photo you can see I've added more texture to grassy area. This will form the framework for my grass.
Here I have roughed in the grass. The upper area is cool with naples yellow, titanium white and blues. As I moved down the painting more yellow ochre was incorporated. Further grass details will be added after the dogs are painted.