Digging up an oldie thread! I would say I have 20-30 left. Possibly under 20. Only a couple blue spruce made it. Maybe 10-20 of the white pine made it. One oak. Last year or year before I added some. Mainly arborvitae. Might have half of them. Probably under half. I've considered digging some and replanting in a tighter group as they are spread all over right now. Just hate to lose anymore.
I would say the ones which were slightly larger did MUCH better. The 12-18" starts didn't fair well. Larger ones were maybe 18-24" and were my best survivors. Take it for whatever that is worth. Could have been chance or maybe it is well worth it to buy them a little bigger from the start.