If we have a cold spell in winter, I will move the cold sensitive cacti back under the patio and cover them.
I think the variations in spines and shapes and colors are fascinating, but it is a lot of work to move these pots back and forth. I really have too many cacti that are sun or cold sensitive. Perhaps I should consider a greenhouse!
We had another quarter inch of rain last week, so several cacti decided to put out another round of flowers. This Argentine Giant is ready to bloom. I took this photo at about noon, but did miss the open flowers, which occurred after dusk. I think the buds are as pretty as the flowers in their own way.