This P. strobus has a firm hold on a site about 30' off the NE corner of the house. I can't say there's anything special about this White Pine...except for that it's awesome! I don't know how old it is, but I'm going to venture a guess that it's around 30-40. I've had the good fortune to watch it grow over the past four years and I find myself lost in admiration. There's just something very serene about watching a grand native in the prime of its life. Some consider it weedy, but I Love every one of 'em. :)