I struggle with greens. No, not kale or Swiss chard. Painting greens. grass, leaves, etc.
Some artists wouldn't think of using greens out of the tube. They make their own from blues and yellows.
I have made charts mixing assorted blues and yellows and charts using tube greens adding white or red. The thing about tube greens such as sap green is it is bright which is good when you want an eye popping fresh green. Using a touch of cadmium red lt. dampens the vivacity yet retains a low-key hum. Somehow I am missing the atmospheric color I am looking for. Suggestions?