Here's a quick 'how to' for making what I think are rather nice hedges for your wargames table... It starts with strip of plastic-card, about 6 inches long and an inch wide. You could use MDF or even ordinary card - although paper-based card is prone to warping. Cover them in PVA, then sand / grit, paint to match your terrain and apply a garnish of static grass. Voila!
Tip - To help prevent any warping or curling of the plastic-card when the glue/sand dries, I 'bent' them for a few days before applying the glue and sand, by putting a kebab stick under them and weighing the ends with piles of books. The end result was that they are flat.
This pic gives you a slightly better idea of scale.
I then glue (smelly 'all-purpose' glue!) on pieces of roughly torn Woodland Scenics clump foliage - using three colours, Light / Medium / Dark green. These are available from many model shops or on-line. Each bag is about £8 but will make a LOT of hedge. I estimate that each one of these hedge strips has cost me about 40p. Good value I reckon. Plus it only took two-to-three evenings to make 60 inches of hedge.
Here they are providing Phil's beleagured Paras with some much needed shelter during a game of Chain of Command.
Hope you found that useful.