Hi…can I get a little advice? I moved into a new home with a fantastic agave about four months ago. We recently had a cold snap here in Phoenix (if you can believe that), and it’s looking sickly now. Is there anything I can do to help its recovery?
It does look like cold damage. There’s really nothing you can do at this time of year to help the plant. It looks like it will eventually come out of it. You’ll know when you see new leaves starting to grow out of the middle, and then you can start cutting off the older dead leaves. But you shouldn’t really start any pruning until spring. At that time, after you see some new growth, I would recommend fertilizing with something like a Liquid Kelp, or other low-strength growth stimulant, but not until the plant has started coming out of winter dormancy.