not sure if you need help wuith hedgerows anymore, but I picked up the trick of using those green scouring pad “bricks” you can buy at grocery/hardware store. Cut em’ up into whatever shapes you want, coat them in some glue, and roll them in something to give them more of a leafy texture, I used Green Flock, which is like little bits of green rubbery stuff. Then just paint away. Heres a couple pictures of some made that way in an (as of then) unfinished Normandy dio I made a while ago:
Hope this helps! By the way, As you cna see, this method is better for creating what look like trimmed hedgerows, but probably if you ppulled at them and cut them right you can make it look like the picture M1Garand posted.