Hi, I've been asked by a friend to help out with some gardening in Alberta (about 3 hours north of Calgary - not BC, I know, but hopefully someone can help anyway!) They have a greenhouse, which is just a frame covered with plastic, and they're having trouble growing things. My experience with gardening is mainly Mediterranean, and I know what I would do at home, but I'm not sure it would work here. If anyone can give me some good advice regarding soil, amount of sun/shade, etc, for growing vegetables in a greenhouse, and on the greenhouse construction too, that would be great. Thanks!