I saw a post on FB that brought my attention to a product called 'Moss Roll'
It's 60mm wide and 900mm long on a roll. £2.49 each from Dunelm Mill in the fake flowers section. The backing is a soft metal(?) mesh with a heavy coating of mid-green flock, which does shed a lot, but save it for infills and spare.
It can be used folded up or over a foam spine to make hedges, but also for tree foliage on an armature, pulled open a bit for camo netting on gun emplacements etc.
It's worth a look at imho.
And I know it would be a better recommendation if I Actually had a picture to show you, sorry