These are my grafted seedlings, mainly ariocarpus and Astrophytum.
I sowed seeds in the beginning of September last year and grafted them in mid of October. I grafted around 120 seedlings but some of them left from my greenhouse. Ariocarpus have finished flowering and gotten fruits.
I use seedlings of Harraisia jusbertii as grafting stocks. 3 years old jusbertii seedlings should be grown around 30 cm height. I graft seedlings on top of jusbertii stocks and cut off bottom of stocks after confirmation of the successfull grafting.
I cut stock height as 22.5 cm and rooting. Since I bury 2.5 cm of stock in soil, all my grafted cactus heights are around 20 cm.
Jusbertii will grow through a year and scion also as same.
As you know, Harraisia jusbertii is a hybrid. You need crossing with an Echnopsis to get seeds.
Hi Tvaughan
I just put a scion on top of the grafting stock, no pressure on the scion.
I use also a paper cap shown in the photo to minimize drying up and stopping direct sunlightto hit the scion. The grafting will complete in 10 days.
After cut off bottom of grafting stock, return papaer caps again during rooting. The top of the paper caps should be cut off to give soft sunlight on scions during this time. You may keep papaer caps around two months.
Hanazono
thanks for the detailed explanations. You've got a well working system. My H. jusbertii grow a lot slower than my Selenicereus and for now, I'm not able to grow the quantity of stocks for my needs.
Although, I have about 50 little seedlings of Jusbertii for the next season to try.
Beside this, I've found a cereoid cactus in the northern Paraguay which is very similar to H. jusbertii. In another thread, I'll post some pictures.
I would have to build a greenhouse to grow the graftings for all the year. For now, the weather is to cold (4ºC) and they stop growing.