We have to put in just under 200 meters of a new hedge for glas before the end of february. I have a lad coming with a digger in the next week or 2 and I'm going to get him to clean off the ground as it is along a drain and there are some briars growing. I'll get him to ruffle up and make a little mound about 2ft wide for me to plant the trees into. I have to plant 6 trees per meter in a double row. I plant to plant whitethorn and mix some holly into it. What size plants should I be planting? I will be cutting them off at 10cm. Should I be laying terram or a roll of polyethene to keep weeds down or will a hedge grow without the polyethene? Anyone got recommendations of the best place to but the trees keeping in mind both budget and quality?