I don't have many winter growers and most of them are conophytums. Having had them for 3 years now I'm clearly not an expert. But in terms of seasonal watering schedule they seem to indicate what they want much better than lithops. Or rather they just insist upon doing what needs to be done in a way lithops often can't manage. Of course my observations are just that and I don't have that many plants to say they are all like this but let me try to explain what I've seen so far.
You know how lithops just go into stasis and completely shut down during a heatwave? You think that would be a great time to catch up on some quality growth with lots of sun and water but they just won't accept it. They stay wrinkly as if thirsty. But the difference is that instead of going soft they become hard as stones. And no amount of water brings them out of it until the heat is over. This indication of "leave me alone" is really great and helps the grower. Unfortunately they don't do the same during the important phase of regeneration, mainly because it IS the time of active growth. It just happens invisibly. And so if watered in winter they will just keep expanding until they rot. Would be nice if they just shut down then as well and didn't accept waterings.
Luckily for conophytums, the period of stasis and the period of absorption of old leaves overlap. And so when conos refuse water it happens at a strategically important time. This makes things easier. My plants looks like this at the moment and will stay this way until late August.
The thing is, young cono seedlings are doing it, too, it appears. I am currently having my first experience with them. My seedlings are 1 year old and very small. That's why I'd like them to continue growing and gain more weight before they start going into sheaths for half a year. You know, with lithops, the first couple of years they regenerate whenever and if you keep watering they will keep growing. I thought cono seedlings would do the same but no, they went to sleep timely with the others. I kept watering but they just stopped accepting it. Now I kinda gave up and am letting them go to sleep in a hope they will eventually wake up. I have my doubts about that... We'll see.
The young Oophytum nanum seedlings are doing the same, by the way. I see the green shining through but the plants are completely inactive. I don't think they have enough resources to go through with it though. They are still very young.
