Treemendus terrain

Trees, a vital part of most fantasy battlefields. I have tried several times to make my own, but never really been satisfied with the finished result or the amount of time spent. And yet pre-made trees can be very expensive. So I was quite happy to spot a relative bargain on ebay, some busch pine trees at just over £10 for 15 reasonable sized specimens. I just had to work out how to "plant"