What is the minimum temperature I can grow cacti and succulents at?
This varies considerably from species to species. The tropical cacti (such as Melocactus) and tropical succulents (such as Asclepiads) need about 12 degrees Celsius, whereas plants from the high Andes (such as Rebutia or Lobivia) or the hardy succulents (such as Sedum or Sempervivum) can withstand several degrees of frost. As a general rule, unless you know the requirements of specific species, keep your plants in a frost free environment at 5 degrees Celsius or higher. TIP : It is very important that plants are kept completely dry when at cold temperatures : low temperatures + wet compost = dead plants!
