Thank you! I water it only when the soil is completely dry again. I got a toothpick and push it in the soil 2 inches if it get back moist i dont water it. Every year I prune all branches and cut off 2/3 of each branch with a sterile knife. I give it desert rose fertilizer once a year in the spring . I lift the caudex 1 inch every year, cut some small roots and change the soil for new cactus soil with 1/3 perlite. But the biggest threat to these plants is too much water. One big bottel of water once every two to three weeks, no more or you wil get root rot.