The recommended potting mix for Cotyledon Pendens is a well-draining succulent potting mix and cactus mix, typically including coarse sand, perlite, and pumice. This mixed type mimics the plant's natural habitat, preventing overwatering and promoting healthy root development. Alternatively, you can create your mix using sandy-gritty soil, perlite or pumice, and a small amount of organic matter for moisture retention. Ensure the potting mix allows excess water to drain freely to keep your Cotyledon Pendens thriving.