Hey Bruno... Long time no speak
Yes... Stored energy. That's why I suggested using Opuntia instead of unrooted pereskiopsis. More stored energy in the Opuntia pads.

Wow! Really? Lucky you! You got the good kind! Mine don't grow that fuzz, but they do have Plenty of spines and glochids!

Could have. I would remove the cover though. It looks like mold growing on the sides... the white fuzzy/hairy looking stuff.
Keep me updated

Try using a piece of paper towel instead of cotton. It won't leave as much alcohol on the blade. Also, when you cut the root stock, Cut a second thin slice and leave it on the end of the rootstock. Then you can wait for the alcohol to dry, cut your scion and then just push the thin slice off to plac...

The pads (cladodes) should have enough energy/food stored inside them to be able to get the graft going. Did you look up the video I mentioned? http://youtu.be/-glXJrswWtw Oh... You are sanitizing your cutting tool before cuts... right? IF not, that could be why you are getting the failed grafts too.

Have you got any Opuntia? humifusa grows around you... try to find a pad and use it to graft. Doesn't need to be rooted. Look up "next generation Grafting" on youtube and try that

Do you have them somewhere warm?
Mine root where ever a piece falls. Just keep the soil moist and they seem to root for me.
Use some good potting soil and you should get roots quickly. Try rooting a bunch. If you need more, PM me your address.

Oh... Good question. I've never grafted on an unrooted root stock. The stick you grafted too now has to try to grow from both ends. May be slow growing for a while.

Looks Good! Did you find the plastic wrap easy? You can always lightly tap the scion to re-position it if you ever need to. Oh yeah... And I've recently seen where someone cut the Rootstock on a 45 degree, downward sloping cut. This makes the center (cambium) ring longer and provides a larger area t...

Congrats! That's Great! It will only get easier and easier!

That one looks fine. I'd leave it. Sometimes a bit of discoloration happens but the graft still does ok. Just don't cover it.
See how it is in a couple days.

I think it's more a matter of practice.
Feel better.

Rust color is not a good sign. Try taking it off again and slice off a new piece from both the scion and Root stock. then, just take a Popsicle stick or something similar that you can place on something adjacent to your graft at about the same height. Rest it on the graft to provide a bit of weight ...

IF you can, Place the cover on the Ario graft off to one side so there is some air circulation. Still looks a bit humid. And the San Pedro... Is the bottom of that baggie open? I usually just place it over the top. I place a tall ChopStick or bamboo stick in the pot to hold the baggie off the graft....

Too Humid! Let it dry out. The black is not good.
Usually just placing the bag over the top is ok... but sealing it is too much.

You may have to re graft it.