are a desert dwelling plant
. They need a fast draining soil. They have basically two sets of roots. One that takes up water and nutrients as do most plants
. And the second set stores extra water in case it has to go through a drought. Almost like a bulb stores moisture or the trunk of a palm tree
. That is why it needs such a large pot to establish those roots. Unless you let it sit in water or water too often you should not have a root rot problem. After your plant
is established, you need to let it dry out a bit between watering. And a sandy cactus
mix is the best soil for this one.