Dudleya gnoma Cactus But in a pot a

But in a pot a reasonable expectation is 6"-1' diameter when mature

then cut back or stop all together in the summer depending on how much it dies back

Stenocereus beneckei  An amazing columnar cactus with pure white skin

Can take light frost when more mature but best to protect when possible

Dudleya gnoma Cactus But in a pot aDudleya gnoma Family: Crassulaceae. A very rare species known from a single location on one of the Channel Islands of California. This is a small branching species with white leaves. The white color is actually a waxy powder produced by the plant. It comes off very easily if the leaves are touched. Best to touch the leaves as little as possible. Easy to grow. Likes lots of sun. Can take light frost, but protect if temps will be below the upper 20s.