Last year I managed to roast a good number of my lithops in the sun (and subsequently drown them in a rainstorm), which left a number severely scarred and scabbed over. I figured I'd leave them be and they'd be as good as new after the next winter.
I noticed something quite interesting in some of the new leaves on the burnt plants. Some (naturally more windowed?) species seem to have reverted to almost completely open windows, while the others are more or less the same as before the scarring. Maybe the scars prevented them from getting much light, so they produced more open windows on the new leaf pair to maximize light input? I guess it could make sense for there to be some feedback loop between window size and irradiance (the scarring happened in Spring so the new leaves were in the dark during their whole development).
The open leaves look quite fetching, especially on these bromfieldii (both were burnt). Too bad they'll probably revert to their normal more opaque selves next year. Maybe some inspiration for how to create sale plants for ebay
- L. bromfieldii v glaudinae C393
- L. aucampiae ssp euniceae
An experiment may be due on a couple of spare seedlings... Some paint may do the trick.