Critter are you growing your plants in pots or in the garden? I grew my sempervivum in a pot in potting soil one year and it was the first time I lost them growing in pots.
I changed to using 70% aquarium gravel and 30% potting soil. They were great in that mix. I used the aquarium gravel because I had so much around the house from the fish tanks.
Because we have so many days through the winter of rain that turns to freezing rain then snow.....We have a special type of winter that plants are in a frozen block of ice if we have even a little bite of soil to hold any of that frozen precipitation. I had the best survival result at my old house growing sedum and sucs in the Fall pine needles and gravel with no soil at all.
I am going to try the same mix with the ice plant because I have never been able to keep them alive through our winters.
