It got cold here (officially 35F / 2C in Iowa City) last Saturday (22 Sep), so I'm currently in the throes of trying to reintegrate the plants that got to summer outside into the plants that didn't. This is, of course, wreaking merry havoc on the collection, spreadsheets, husband, and myself: it's like solving a Sudoku while having to live inside it.
Slightly before this happened, though, one of the three Aloe variegatas I had outside went all weird on me, and I'm unsure about the reason why, so I thought I'd pitch it to y'all. That, and I didn't have anything else to write about today. (Enormous photo backlog. I'm working on it.)
This only happened to one of the three plants, and only the Aloe variegatas. It happened before the freeze, though we'd been getting cold nights for a while prior to this. (The Aloes would have been left outside in the garage if it was going to be above 55F/13C at night, and brought inside otherwise. I believe I was pretty consistent about this.) Since coming inside, some of the bleached and shriveled areas have dehydrated, but it doesn't appear to have spread any. There are no signs of any pests that I'm familiar with.
My guess is cold damage, but since I've never actually seen this before, I'd appreciate it if someone could either confirm this or offer an alternate theory.