"David Hill" wrote in message
...
"......... I think one is way to large to transplant (I would need a crane
to lift it) .........."

With a beauty like that I would give it a go, shorten the top back well then
try to split the clump into 3 or 4 bits,
When replanting mix peat (Peatmoss) into the soil water well after planting
and stand back.

Current advice I get from the local experts is to only use the soil that came
from the dug hole. Adding anything to the soil will cause the roots to stay
in the softer soil and not send feeders out into the native soil.
YMMV
Tom J