Dennis asked re potting Wilcoxia and Peniocereus > When you say big pots, do you mean deep, or do you mean shallow-but-wide ? Use plastic pots. They will tell you when it's time to repot. Big means all dimensions with these. Monica wrote > I doubt Wilcoxia could have survived the heat of the low desert near > the Salton Sea where we lived before. I found by experience that very > few cacti can survive 120F+ high temps! No problem as long as they're shaded and the pots don't get sun to heat the soil. This goes for most (but not all) cacti - they're fine with 120 F / 50C if they have some shade and the roots don't cook in a sunny pot. If nights cool down a lot these CAM plants are even better. Leo Martin Zone 9? Phoenix Arizona USA