I'm in zone 9, and winter is my active growing season. I cut all mine back in late-summer after the 110+ heat leaves them all leaf-less sticks. Then as soon as the cooler fall weather starts in, they really take off and grow all through the winter. Granted, not everyone in zone 9 has such miserable summers as I do.

Phoenix Ryan

I'm in zone 8. Here I have to cut back before first frost.
Hope this hopes.
Dorothy

I assume he's in zone 7b. I'm in 7a and can't winter them over inground. He should put it in a fairly protected area and mulch well. If his house is brick planting it somewhere close will help. Also make sure it's a well draining site. Cold wet roots are what will kill them. I'd cut it back, mulch well, fill around the stump with dry leaves then cover with an upside down clay pot.