Pereskiopsis
Commonly used for small seedlings. Its leafy growth and handling differ from a large columnar stock; do not assume a fixed replacement deadline.
Last reviewed: 30 September 2026
← Cactus CodexScion and rootstock
The scion is the plant above the union; the rootstock supplies the established root system. Healing involves adhesion and new vascular connections. A graft does not rewrite the scion’s seed parentage, and successful attachment does not certify either partner as pathogen-free.
Shimomura & Fuzihara · Vascular connection in cactus grafts (1977) ↗
Step by step
The sequence is cut, align, secure and observe. Practice it in the simulator below, or follow the written steps that follow it; the simulator's days, scores and growth rates are illustrative game values, not measured data.
Grafting Simulator
Step 1: Choose a rootstock
01
Pereskiopsis
Small seedling practice.
Practice selection
02
T. pachanoi
Columnar stock practice.
Practice selection
03
Myrtillocactus
Globular scion practice.
Practice selection
04
Hylocereus
Tropical stock practice.
Practice selection
Select a rootstock to begin
Written reference for the same sequence:
1Select healthy stock and scion
Choose an actively growing, well-hydrated rootstock and a scion free of unexplained spotting or softness. Quarantine anything with unexplained symptoms rather than grafting it into a shared collection. Clean the workspace and tools first: remove plant debris and let disinfected tools dry — a blade dipped in sulfur is not "sterilized."
2Clean flat cuts
Disinfect the blade and cut both rootstock and scion with a single smooth, level stroke. A flat, even surface on each piece gives the best contact; a ragged or angled cut leaves gaps. Unlike an ordinary rooting cutting, a graft surface must not callus — bring the fresh, moist cuts together promptly.
3Align the vascular rings
Bring the cut faces together while still fresh. The pieces do not need matching diameters — an offset position that lines up the vascular ring (the harder ring visible just inside the skin) matters more than centering the two pieces visually.
4Secure with gentle pressure
Hold the union together with rubber bands, string, or a light weight — enough to prevent sliding without crushing or slicing into the scion. Recheck the tension over the following days as tissue settles.
5Aftercare out of direct sun
Keep the newly grafted plant shaded, undisturbed and away from standing moisture while the union develops. This is not the time to test its light tolerance.
6How to tell it took
Look for new growth on the scion, a scion that stays plump rather than shriveling, and a union that resists a very gentle test rather than slipping. Remove restraints once they are no longer needed rather than on a fixed schedule.
Henry Shaw Cactus & Succulent Society · Grafting cacti ↗ · Bach · Double-cut grafting on Trichocereus pachanoi, Desert Plants (2009) ↗
Vascular alignment study
In a 1977 study, young Notocactus submammulosus var. pampeanus scions were grafted onto Hylocereus trigonus. Vascular connections formed in nearly all aligned grafts by day 20, compared with 40% and 10% at 1 mm and 3 mm separation in that experiment.
This supports the importance of vascular proximity. Those percentages are not a success calculator for adult star cactus, Lophophora or every rootstock.
Shimomura & Fuzihara · Vascular connection in cactus grafts (1977) ↗
Choosing a rootstock
Pachanoi-type stock
A substantial columnar option. Keep the actual stock identity and source, not just “San Pedro.”
Myrtillocactus
Another columnar option. It is not uniquely both fast and permanent, and its performance depends on the pairing and conditions.
Selenicereus / Hylocereus
Keep both current and older literature names searchable. Tropical stock can change the cold requirements of an otherwise desert-type scion.
These are horticultural uses, not a ranked trial or universal compatibility chart.
Rootstock comparison
Pros and cons as reported by nursery and society sources — not a controlled trial, and not a guarantee for any specific pairing.
| Rootstock | Pros | Cons |
|---|---|---|
| Pereskiopsis | Leafy growth pushes small seedlings and micrografts quickly; widely used to get slow or chlorophyll-free seedlings established | Not generally treated as a permanent rootstock; typically outgrown and the scion eventually removed to its own roots |
| Trichocereus pachanoi (syn. Echinopsis pachanoi) | Vigorous, substantial columnar stock reported to support permanent grafts of larger scions; documented vascular-alignment behavior in the 1977 study above | Slower to establish a very small seedling than Pereskiopsis; keep the specific stock’s identity and source on record |
| Hylocereus (incl. H. undatus, H. trigonus) | Fast-growing, vigorous, commonly used commercially, including for small seedlings | Reported to offer a smaller contact area and higher water demand as a graft, which sources link to forced growth, scarring and a shorter working life; cold-sensitive |
| Myrtillocactus | Thick stock gives a generous contact area; nursery sources report better long-term compatibility with unusual scions than Hylocereus | Slower initial growth than Pereskiopsis for tiny seedlings; a columnar plant with its own space and support needs |
| Harrisia | Reported by growers to give a more natural, less inflated scion appearance than Pereskiopsis, without the aggressive “beefing up” effect | Less cold-hardy by grower report; less extensively documented than the other stocks here |
Henry Shaw Cactus & Succulent Society · Grafting cacti ↗ · Bach · Double-cut grafting on Trichocereus pachanoi, Desert Plants (2009) ↗ · Shimomura & Fuzihara · Vascular connection in cactus grafts (1977) ↗
Aftercare
Keep the union protected from direct sun, disturbance and standing moisture. Support the rooted stock appropriately; a blanket “never water any graft for a week” ignores differences between methods and plants. Monitor for pressure damage, slippage, shrivelling and rot.
Do not twist or pull at a fragile union to test it. Remove or adjust restraints before they damage tissue, taking account of attachment and growth. Healing time varies; new scion growth is a more reliable sign than counting days.
Degrafting
A scion must be able to survive on its own roots before removal is sensible. Chlorophyll-free plants cannot simply be treated as normal green cuttings. Consider the remaining healthy tissue, rooting conditions and plant value; no fixed age makes every graft ready to remove.
For unexplained rot or systemic symptoms, see Cactus health. Try the fuller illustrated bench in Gritty Mix.