transplanting a couple trees that popped up in the wrong area
I have two trees sprouting in a perennial bed that I'd like to move, as they are in a location not appropriate for their eventual size.
One is a sugar maple seedling. It's 2 years old but resprouted from the ground this spring (my wife cut it at the ground last fall), so it's a 1 yr top with a 2 yr root system. It's in beautiful bright orange foliage right now and about 24" tall.
The other is a sweetgum (Liquidambar) sapling, about 85" tall, about an inch caliper now - it has grown about three feet each of the last 2 growing seasons and probably has a pretty extensive root system now.
For each tree, how would I go about moving them? How far out, and down, should I dig to try to get as much root as possible?
Is now or spring a better time?