Melocactus violaceus Mesemb your conditions will determine the

your conditions will determine the ultimate coloration it settles on (which can continue to change as your conditions change

This plant commonly drops its leaves when stressed then regrows them when conditions are good

You can also collect seed and sow it in the spring

They are shown  growing in 6" pots

It is shown  growing in a 6" pot

Melocactus violaceus Mesemb your conditions will determine theMelocactus violaceus Family: Cactaceae. A nice cephallium forming cactus. When young (as they are now) they seem like a regular green cactus but once it gets big enough the main plant stops growing but produces a large hairy inflorescence that continues to grow for the rest of the life of the plant. Eventually the inflorescence can be taller than the plant itself. This is more tropical than most cacti so it doesn't like cold weather and it also