Hi all. I am not at the 'tree' stage yet on my layout, by any means ... but am wondering, as I know dense woodland is an excellent way of hiding all sorts of evils (and, yes, of gathering dust) what the thinking out there is on trees. Most of the 'OO' stuff available commercially is risible - a 'tree' three or four inches tall is, to scale, more a shrub than an actual tree (and these models are damned expensive) A typical park tree here in London is about 50-90ft tall, which means a model of at least 7-8 inches in height. So should I be looking at O-gauge trees (just as, I am told, i should be using N-gauge ballast) or should I be making my own? And if the latter, how? Is there a quick-and-dirty way of making several hundred realistic trees that are the right height?