I grow medusina in a mix of turface and perlite like I did with most of my other pings. (Now I use mostly turface with the addition of some cactus and succulent soil - peat based with added pumice and lime. I’m not sure the lime makes any difference. I don’t keep it bone dry in winter; it still goes through its active and dormancy phases as the temperature regimes change. Like gypsicola it tends to be a little late to emerge, since Seattle is cooler overall. Lots of my plants are just “waking up” now as we have had a very marked “Juneuary” this year and have only now started to have days consistently at 70 (21C) or over. Gypsicola is just now starting show signs of summer growth for me now.
Many is the moranensis varieties are similarly late to “wake up.” On the the other hand they’ll grow well into December or even January.
Attached is a photo of my medusina. And gypsicola just for reference.
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