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N.D. wrote:KarlR, how do you grow them? I have sown them twice, both times with the same result: They grow fine to about 1cm in size, and then they sit doing nothing, slowly and gradually desiccating to death (not collapsing quickly). I grow them in small clay pots with 75% grit/25% soil, water about once a week (less often in winter), and put them out in the sun for the summer. I suspected they did not like the winter cold (about 15C), but they don't grow in the summer heat either (under direct sun and in the shade alike).
It could be because you are germinating them in clay pots, maybe they are drying out too soon?
I understand the benefits in clay pots but find they dont work too well for me....
kuni12345678 wrote: I believe that the problem with all Pseudolithos plants is the fact the they are from areas of the world that have high winter temperatures and dry climates.
My major problem was they don't like too intense light intensity when still small. And they don't like draft. I lost a lot of seedlings on sunny days (where other seedlings were still unharmed) in August, or lost them in winther when they were close to the window (where I could not excluse draft).
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I germinated mine in a fairly ordinary mix. Probably around 50% coco coir and the rest grit/perlite/vermiculite/pumice or similar stuff. In 5 cm square pots in a tray covered with a plastic lid (one of those mini greenhouses). Then after about 6 months they needed repotting, and I then put almost all of them in a completely mineral mix.
I probably watered ca. every 10 days on average. "Day" temperatures were probably around 30-32 C, and "night" temperatures around 15-18 C. Approx. 14 hours of light per day.
I added fertiliser with most waterings, and made sure the soil mix became thoroughly wet.
With this setup they grew very quickly, and I never lost a single one to root rot. They never had any resting period.
But, like I said, this was the first time I tried to grow them, so I don't really know whether it was the heat they enjoyed, or the regular waterings or something else, or a combination of factors.
Most of the mesembs I grew failed to thrive in these conditions (and the same with Pedios and Scleros), so it certainly isn't suitable for all succulents.