Gardener Rika of Lithops Stories had an interesting post this week about Lithops that get...stuck. They start to regenerate, then just sit there, sometimes for months, while their brothers and sisters are already fully releafed and living energetic, purposeful lives. Frustrating!
1. Leave it alone. It's just doin' what it's doin' and it's none of your business.
2. Water it. This can jolt it awake, so it gets moving with regeneration. It's the Cold Shower Treatment!
3. Surgery. Cut away the old leaves so the young ones can grow, and the Lithops won't be "stacked". Or alternately, cut the old leaves open to release the new leaves.
I've tried all three methods. The safest is to simply leave it alone. Eventually, they usually wake up and get moving. That happened with this Lithops:
Option 2 has worked for me...sometimes. But one set of stuck Lithops just turned to goo when I watered it. If I use this option again, I'll give the Lithops only a few drops of water from a pipette, not a full watering.
Option 3 has worked well, with one caveat. Leaves that are cut to be more fully open, as with the Lithops below, will certainly survive, but the new leaves seem to grow very slowly.
I would add another option if you live where Lithops can live outdoors. A couple of very stuck Lithops were replanted outside. Sure enough, the extra light (but not extra heat) gave them a boost, and they regenerated quickly. On the other hand, re-planting or re-potting a stuck Lithops might kill it; I may have just been lucky.
Hopefully other Lithops bloggers can post on this topic, too, as it seems to be very common, and very perplexing!