grafted saguaro sprouting roots

[onesickfreak]

so if you remember or not i grafted a few saguaro as an experement... one thing i proved is slugs love it when you cut open some opnutia for them...
but i did get two nice ones on perski, (frankengraft and the bride of frankengraft) one got so big and fat it bent the stick over. so i cut it down some, about to regraft it to a pedro, and i see these roots...
behold, frankengraft

frankengraft rooting.JPG (43.41 KiB) Viewed 2325 times

now, ive seen something on another site about removing the entire root stock, cutting into the bottom of the scion to remove it... is this necessary, or would a flat cut work, leaving some of the stick in it...?

thanks

oh yeah, the bride of frankengraft has sprouted roots as well...

[tumamoc]

I don't know, but congrats! Roots on a saguaro cutting is pretty remarkable.

[LophoFan]

I get roots on a lot of my grafted columnar seedlings. Nothing out of the ordinary.

[CactusFanDan]

I get roots on a lot of my grafted columnar seedlings. Nothing out of the ordinary.

It is quite unusual for a Saguaro. I don't think there are any documented cases of them rooting from cuttings. They're overall notoriously stubborn to root.

[BarryRice]

Are you confident it is truly a saguaro and not some lookalike, like Echinopsis terscheckii?