Tephrocactus geometricus 17 month update

Previous post: https://www.reddit.com/r/Graftingplants/comments/1cl85ys/tephrocactus_geometricus_on_various_rootstocks/

Pereskiopsis: This one blew up a lot and grew a nice big ball

PC: It's growing, but pretty slowly

Opuntia: No growth. I've had to remove a lot of pups from the rootstock, and added another scion recently

Grandiflorus hybrid: This one was doing ok, but I didn't catch the pup in time and it pushed the scion off. I'll graft another one to it in the Spring

Conclusion: I don't think they like to be cut in half. Next year I'll do more impale grafts on pere, and maybe try some other rootstocks like dragonfruit