[Paul R.]

The deep and / or deep-at-an-angle approach backfired for me this year, as noted previously...

[Pete from Shawnee Mission]

Paul your comments also suggest that you you may have a problem--at least this year--with too much water.

You mention 10 inches deep. I usually will not have more than an additional 5"6" laying down at an angle in the trench/hole and the root ball is usually not more than 5 or 6 inches from the surface.