It's a good idea to have some woods. As well as some general purpose dotted around the town trees.
So I've bought a load cheap Chinese trees.
Several different sizes up to 6" - about 30 scale feet or so. They cost £10.22 in total.
For this lot - 45 unbased trees. I'm basing them on 2p pieces.
Of course, a few monsters make the woods a bit scarier, so some Garrison S&S Tree Demons. Some of the flock has come off the trees in transit so I've glued some of it on the demons as added foliage.