Hi Keith,
Just wondering how you got on with the degrafted Aztekium ritteri you were trying to root.... Did it grow roots or is it still rootless or did it die without rooting?
I recently purchased a grafted Aztekium ritteri with over 25 smaller offsets... I was planning on grafting a couple to some big trichocereus stock to really speed things along, not sure how that will go but if it takes and produces some decent size offsets in a reasonable time I would love to root a degraft. I have had good results in the past grafting slow-growing small Mexican cacti to chunky Trichocereus... Really keen to see how it goes with Aztekium!