I recently ran out of green stuff and decided to have a peruse online to find a company to order replacements from as my usual source was out of stock. After a little rummaging I found FORLORN HOPE GAMES and ordered a couple of packs of greenstuff and some new static grass.
The order arrived very quickly (especially as the postage was free) and I must admit I am very impressed. I think I have found a new source for materials too as they stock Gale Force Nine scenic bits and bobs as well as a load of miniatures!
All the best!