I see a ferocactus with variegated green (not yellow)stem, if I'm correct than the tissue that lacks chlorophyll is weak makes it more susceptible to sunburns , diseases ,rot and other defects ,the cultivation care that others have given is the same advice I would give you

My name is Mike, I'm a cactiholic,I grew up in Fountain Valley,Ca,USA,this is my first post ever! I've had succulents since high school( still unidentified dwarf aloe)I divide and repot about 3-4years ,almost time to do again.10 years ago I was given a Jade plant cutting ,now a 3ft. tall potted in h...