While this is not my photo, I do have some cultivars, that seems to get these mushy leaves pretty much consistently, one at a time gets mushy and often it can be a random leaf, like it would be skipping a row, I mean not necessarily the adjacent leaf, which this last fact rather fascinated me.
Can we identify the exact pathogen here?
Does anyone have this mushing issue? It's not a winter thing, I have seen it even several days ago.
Now I wonder if I should completely discard those rosettes, which of course means I would completely lose certain cultivars, yet I am not sure if there is a limit to this issue, I remember seeing this mushiness in many cultivars, but I did not gave it that much attention.
If I recall correctly "Othello" stopped getting mushy after some systemic fungicide (we have a wide amount of chemicals here), yet "Amaranth" seems to consistently have this issue, even after getting sprayed.
I will have to keep an eye on this more. yet I do not really have the time to watch these details exactly.
I have already tried removing weak cultivars that cannot pass the winter due to general rot, like 'Proud Zelda'
Unfortunately in the Sempervivum world we do not rate the cultivars for resistance against a particular pathogen like in the rose world, where we can say a certain cultivar is susceptible to black spot, powdery mildew, rust and etc.
Just because someone never had a problem with a cultivar doesn't mean someone else can't a ha problem with that exact cultivar, at least this can be the case with other plant species.
Or maybe the weakness to certain pathogens is beyond cultivar rating and selection in Sempervivum.
Photo from sempervivum-liste.de
