Do I need to regraft this Cintia knizei "rubra"?

[zagoric]

Original stock didn't survive shipping and potting...will it grow on its own roots or do I need to regraft? If grafting, would you recommend Harrisia justbertii or Myrtillocactus? Thanks.

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[toadstar]

I'd regraft it. There's hardly any chlorophyll to support it on its own.
Either stock should be fine I'd think.

[kreative01]

Yeah regrant for sure i have a bunch of these as well, they do fine on either of those i personally prefer jusbertii at this point in my grafting but it's just because myrtles can sometimes get weird in winter or decide to rot for no reason, i don't get that with jusbertii. Trichocereus P could work too if you want a real fast grower.