When you say soft greens, do you mean 'grey' as in desaturated, or 'soft' as in loss of detail? Reading what you write I think you mean the latter.
I'm not sure what's going on, I don't think I've seen/felt that before, LOL NOW I WILL, THANK YOU FOR THAT
I can think of a few things - you're used to seeing green one way and film treats it differently than the (over saturating?) digital, so your attention is drawn there. Leaves are one of the hardest things to resolve, they are nearly fractal, so any distance loss is more evident if you look closely, plus leaves can move.
How are these scanned, a drug store? What do you do with post processing? (Here's something you can try: dup the layer in photoshop, blend it in 'soft light' and back down on the opacity.) I played with the first photo a bit in photoshop, I'm not sure I understand what you're seeing?