I've been growing
trees from seed for awhile now. I thought I would share one method.
I want to preface this by saying, this isn't the only method of doing it, and it isn't the only way I do it. It's just A way.
I started some seeds between two pieces of damp paper towel in a plastic bin. I wait for them to sprout, and then plant in peat pots. After they have been up and out of the soil for a day or two, I move them outside in almost full shade under another plant. As soon as they start to get their true leaves, I move them out so they start to get a few hours of early morning sun. I usually leave the tree in the peat pot until the first
roots start coming out the bottom. After that, I move them into 1 gal
root pouches. I'm going to let them air prune in the pouches for a year or two before planting out, unless they are very fast growers. Some trees I planted this spring are already air pruning pretty well. They may go into the ground this fall to over-winter.
I have some trees that I planted directly into pouches. I generally don't do that anymore for a couple reasons. I have had times when I planted a tree, didn't wait long
enough, and planted another seed. That, of
course, ended with two trees in one pot. It's also more space effective to plant in peat pots until I know which trees are going to survive.