Maple trees? I'm growing a maple tree from a seed. How big should...

I'm growing a maple tree from a seed. How big should it be formerly I plant it outside?
Answers:    you have to plant one, here are myriards of seeds around ,each day we sweep them up and get them into the Yard surplus bins, for pick up, there is no method to pluck up all the seedling that have sprouted up out side.
markedly the maple tree can survive pretty well on its own but if you call for to start from seed I would be concerned that the plant did not bring back pot bound and is hardened to outdoor life back planting it.

pot bound- when the roots hit the hard surface of the and curl around the end of the pot. this can train the root to circle instead of going deep (Tree root run deep) and wide-ranging (Tree's roots general extend to the creep of the canopy drip line)

Harding stale consists of gradually getting the plant use to go in the great outdoors where on earth the wind blows, the sun beat down and it is usually either too dry or too drizzly.

On the other hand maple trees are one of the species that can be miniaturized using bonsai technique then you can Have them contained by the house at a small size and never plant it outside.