I just finished a set of grasslands to go with my Jungle terrain to represent clearings and Elephant grass for my World War 1 and 2 and Modern games. I invested in a static grass applicator and some long Static grass and I am quite pleased with the results.I mount all my terrain on impregnated masonite for it's durability and warp resistance nothing can be more frustrating to have your new terrain set curl up as the weather changes and look like crap. Here's a quick bit of advice, don't skimp on materials it will show in the end product and sets a pro job apart from a amateur one.The last 3 pictures are of a marshy area overgrown with brambles.
Here's the pics