Instructables
Grafting is placing one plant onto another so the inserted plant grows off of the other. This is commonly used with fruit trees and cacti (especially the colored ones, the colored part usually can't survive on its own). Here I show how to graft one cactus onto another.

Note: This may not always work. Not all cacti may be compatible and sometimes by attempting grafting you may harm one or more of your cacti. You are solely responsible for damage and injury caused by this instructable.
 
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Step 2: Grafting

Step 1: Cut off a piece of cactus 2. If it's like the one I used then get about 3 segments (image 1). Make sure to get a nice clean cut.
Step 2: Make a cut in the cactus you are grafting onto (Image 2. Sorry but the picture of the cut got lost somewhere). Make sure this cut is clean as well. Make it deep enough so you can get a centimeter or two of the cactus 2 in it.
Step 3: Insert the part of cactus 2 into the cut and let time do its work now.

Step 3: Finished

Now you have an interesting cactus. If all goes well they will fuse together and now they should flower at different times of the year depending on the species of cacti used.
bajablue7 months ago

I can't wait to try this! Thanks for sharing!!!

Cool idea. One minor quibble, the segmented "cactus" you used is a succulent. A Schlumbergera, to be exact. All cacti are succulents, but not all succulents are cacti. :0)
Masterdude (author)  MrBrownThumb3 years ago
Well I am not exactly an expert in such things so thanks for the information.
No worries, I hope I didn't come off as a jerk. It's just one of those weird "facts" about cacti & succulents that is always bouncing around in my head. If it has spines, it's a cactus. If it doesn't have spines it's a succulent.
Not correct. I it has "areaolas" is a cactus if it has not is a succulent . Cactus too are succulents (and not all cactus, pereskia plants are little or nothing succulent, but they are cactus indeed). Then every succulent, if it can be grafted, can be grafted with plants belonging from same family, so, euphorbias on euphorbias, asclepiads on asclepiads , aizoaceae (mesembs) on aizoaceae (not common but I'valready seen lithops on delosperma grafts :) )
Masterdude (author)  MrBrownThumb3 years ago
No, it's OK. Thanks for the notice. I changed the title so it would be more correct.
Schlumbergera is a genus of tropical epiphytes within the family Cactaceae, not sure why its not accurate to call it a cactus.
lennyz1 year ago

Lophophora don't have spines, but their a cactus...
Meanwhile many euphorbias' have spines & look like a cactus but arn't.
Peace, Love, know what your boilling....
cart5622 years ago
This actually works??
Masterdude (author)  cart5622 years ago
Yes. A few months ago, maybe half a year, it even flowered. I have pictures which I'll have to upload someday.
ChrysN4 years ago
Interesting, I have a couple of cacti to try this on.