Hi, Stingray.
The problem is, that there is no separate texture for hedge model. Well, as a matter of fact there is one, but game never uses it - i guess it's just leftover from development version.
There are two textures (boccage.bmp and boccage2.bmp) used in all three hedgerow types.
But (!) bocage and low bocage use both of those textures, while hedge uses only one (boccage2.bmp).
Therefore it is possible to distinguish it from other two types by changing one of those textures (making it slightly lighter for example). The one composed of only one type of leaves will be hedge.
Here is a link to zipped boccage2.bmp file:
http://www.2shared.com/file/Juv9rNh0/boccage2.html
Just Unzip it to Z folder and check it out.
If you want I can make it brighter, or even pink, but maybe this will suffice.
Regards,
B.