I'm new to tree planting and keep hearing contradicting thoughts on this, the nursery guy says leave the cage alone and that I'll kill it if I remove it-others say remove it. I know this should have been posted in the nursery section but this will get more views here and I'm doing the job tomoro. Of course I know the obvious things like don't plant too deep blah blah, just getting confused by this guy at the nursery because when I asked him about cutting the cage off he looked at me like I was from mars-seemed to make sense to me. Oh, its white pines, 9 of em 7 to 8' tall, any help would be appriciated guys, thanks in advance. MDS