If I'm planting water shy succulents and cactus in pots, I add pumice (I used to go down to the rock yard to get it. They would let me pick up all the little pieces that broke off the "feather rock") or perlite.
Lewisia can handle more water than you might think if they are in well draining soil. Its the moisture being held against their roots that kill them. In their native habitat, they are rained on every afternoon during mid to late summer. If the day starts clear and gets hot, the clouds build up, the rain falls. It mostly happens in July and August - we get most of our annual rain then.
So Tarev, look east. When you see those big columnar clouds building on the mountains in the afternoon, its time to water the Lewisia.
Daisy
