The challenge isn’t making the grass greener, it’s isolating the grass so that ONLY it is greener.
In PS there’s at least 3 different ways to do things; here’s one.
Find a color green and use a paint brush with "color" as the blend mode. You may have to play with opacity or even different blend modes, but that is one way.
Try the other side of the fence.
Now that was funny Eddie.
Is the grass already green? If so, try selecting the grass and upping the Saturation under Image>Adjust>Hue/Saturation.
I had a bet with myself about who would use the "other side of the road" line first. I lost.
Image – Adjust – Selective correction:
In the ‘greens’ add a bit cyan and yellow and take out some magenta. You might need to do some masking before.
Hope it helps
I’d create my selection, clean it up in QuickMask, possibly apply a tiny feather, then do my corrections in a curves adjustment layer. That way it’s easily discarded or changed if you don’t like the effect later. Also, you can adjust the opacity of the adjustment layer if you need to. Just be careful with this sort of retouching, Allyson. If you go too far or your selections are off, it will look unrealistic and therefore obviously enhanced. But if you play around with this technique, you’ll find a whole new world of options in enhancing your photos. And so will begin your love affair with Photoshop. 🙂
Good luck!
~Em
I’d start the whole process by making work copy of the original. Do everything on IT!!
Then make a duplicate layer and work on that layer. Besides ALL the above suggestions being tryable, you also pick up opacity fade and the ability to selectively erase things that are NOT supposed to green up, such as clouds that get "greened" by accident.
Another best of luck.
Bill, who LOVES layers and for their lack in Photoshop 4-LE refers to it as having been Very Limited Edition.