For the embankment at Selly Oak, I wanted some really thick, scruffy undergrowth. More texture than static grass alone could offer. The sort of horrible, spiky bushes that self-set in ground no-one cares about, forming a thick and impenetrable barrier if you try to walk through them.
After a little bit of pondering, I decided to use lots and lots of small pieces of "Forest in a Box". Green Scene supplied me with a box marked "S" which contained shot, but dense material. All I had to do was cut it up even smaller, dunk in PVA and press home on the embankment.
What should have been a quick job took more time than expected as the Seafoam needed to be cut into small pieces and quite a few of the less dense stalks were discarded. It looks nice though, in a horrible, wouldn't want to have to retrieve my school cap from there* sort of way.
Bad primary school memory involving a rose bush.