After serious redesign last summer I slip potted the tree into this super pot by John Pitt from England. Mid of April is a good time to repot white pines here, but slip potting is always OK. The rootball goes into a larger container without being disturbed.
First try, one hour against the clock direction. Better, but not good enough.
Second try, two and half hours against the clock. This is how I had imagined the new design.
