Rootman,
It varies really. As time goes on I'm getting better germination and better survival thereafter. The first couple years I might have 10% or a little better out of the seed planted. Now, the germination is alot higher and my three year plants I have probably are at 60% of what I planted. It's a numbers game, you can spray to keep disease away and along comes a vole, poison the voles and here comes a turkey scratching around for bugs and jerks out some 2 year olds. I had a tree fall and slide 40' downhill plowing up roots right and left.Just have to try and plant enough to allow for all that.
Hillhopper