This summer I vacationed my cactus on our sunny porch for the first time.
The plant had blossomed a couple of times in the previous year. The leaves
have turned a deep crimson and it does not look happy. It is indoors for the
winter months. I have repotted it and cut back the stalks. Will it survive
or have I killed it?

Don Whalen, Zone 6b, in the Roanoke Valley of Southwestern Virginia.