Can thecrab cactus use slow-release fertilizer? Is it suitable for crab cactus to use slow-release fertilizer? (For the Chinese plant name "crab cactus", I've left it in Chinese as it is a specific name and may not have a direct English translation. If you provide the scientific name or an English common name, I can translate that as well.)
Is the cactus a plant that prefers shade or sunlight? Does the cactus like a cool or sunny environment?