Good morning, I've been nursing this vase of cacti I adopted from a forgotten office window several years ago...
I'm planning to separate them and give them their own space... and to correct the lean of the Mammillaria (I think) on the left which I think is as a result of it being in less than ideal conditions when young.... it's put on good strong growth and flowered every April over the years so I'm scared to slice off the soft part and attempt to re-root it... I've been researching and some sites say you can bury several inches of cacti after callusing so I wondered whether it's safe to bury the softer part of this cactus or whether that'll just result in rot?
I haven't found what species the one on the right is but it's in very poor condition with just an inch of good growth at the top so I might attempt cutting that off and risk rooting it... I've never done it before which scares me!
Any advice gratefully received