part of my cleaned up cacti.....

iam raj`s mother i love cactus so much i like to keep a single cactus in a container (very big)but it does not grow please advise.

if its the one on your pictures it looks very healthy. i would say it needs potting into a bigger pot with some fresh cactus compost. Raj's mum.

i want to bring up only a single cactus in a pot which looks very very big but i could do it.

They're looking very nice.