I’m in love with this bright red little guy.
The Gymnocalycium cultivar — sometimes called ruby ball cactus or moon cactus — is actually two cacti in one.
A pure red cactus seedling lacks the ability to produce chlorophyll and will die unless it’s grafted onto a green one. The green feeds its mutant mate sugar molecules produced from water and carbon dioxide.
Once established, the two parts grow together so you can’t even see the seam.
I’m going to try and graft the babies on either side of the main ball onto other types of cacti in the garden. Wish me luck!