Advanced Multiple Grafting on Pereskiopsis
Posted 30 April 2006 - 11:56 AM
By Irina V. Ovchinnikova, Ukraine
Seven years ago I took interest in grafting cacti on Pereskiopsis. Once I had an idea of grafting a seedling onto the place of an areole. First I grafted 8 seedlings onto a Pereskiopsis which I put horizontally on the soil. The lower areoles rooted, and I grafted seedlings onto the upper ones. The scions survived and developed so dynamically that surpassed their congeners grafted in a usual way.
I was not satisfied with horizontal grafts though they are very convenient – you should just put a cut seedling on the horizontal cut and that's it. As I lacked spare room which is typical for any big collection of cacti I wanted to try vertical grafting.
I chose 10 specimens of Pereskiopsis 20-25 cm high and grafted 20-30 seedlings on them. I usually keep leaves at the lower part of Pereskiopsis, 5-10 cm up from the lowest leaf. The rest of the stem is for grafts.
The process demands a lot of patience and skill. It is not difficult to graft 3-4 seedlings as they have enough cell sap which glues them to the stock and does not dry during the time of grafting. But when you graft 20-30 seedlings the upper ones dry out and fall off even if you place the Pereskiopsis under the cover with high humidity after grafting each of the seedlings. No fixtures work here. I just cut the leaves of Pereskiopsis lenghtwise and dip the cut of the scion in the cell sap. The sap from the leaf of Pereskiopsis is identical to the sap of its stem. That's why the scion is never rejected.
There are also difficulties in cutting areoles. It is not difficult to cut off a prominent areole, it is more difficult to do it in the lower part of the stem. It merges with the stem, so I do a cutting as shown in picture 1.
After grafting I place the Pereskiopsis to a humid greenhouse. Four to seven days are enough for the
scion and stock to grow together. Then I keep the plants as usual.
Pereskiopsis has such a drawback as growing into the graft. If you graft seedlings onto areoles it does not happen. Besides the "pushing" ability of an areole is so strong that even the seedlings with damaged growing point give offsets from each of their own areoles. Seedlings take rather well even at the lowest areoles though this part is usually so lignified that a usual graft should be excluded.
In two months the seedlings grow 1-1.2 cm high and become crowded. You may cut off every second one and keep the rest to grow up to 3-4 cm.
When you graft vertically you skip 2 prickings out of seedlings, save room and time. I grafted about 30 species of cacti and I never observed any rejection or incompatibility.
Material by V. Boxer, Angarsk.
Posted 03 August 2006 - 12:25 PM
Posted 03 August 2006 - 12:39 PM
Posted 03 August 2006 - 01:08 PM
Posted 03 August 2006 - 01:15 PM
Just hack it off, and leave the cut on the larger plant exposed to the air, or dust with sulfer. I have never left my cuttings of Peresk sit and callous, and I have only lost 3 out of more than 24 this summer.
If you leave any behind it may grow out a new top there. And if you keep new growth trimmed off as soon as you see it this will help promote faster growth in your graft.
This is the one thing I am having issues with my self. Not the growing of the Peresk, but the grafting it self. But I just keep making new stock, and sooner or later I will get the hang of it.
Posted 03 August 2006 - 01:23 PM
Posted 03 August 2006 - 01:26 PM
Posted 03 August 2006 - 11:35 PM
I am trying my first lot of Pereskiopsis cuttings right now using the method you mentioned, don't know if they have grown any roots yet but they look pretty healthy. How long did yours take to root?
i cut them and stick them in cactus/succulent soil. havent had one die or not root yet.
Posted 04 August 2006 - 07:32 AM
Posted 06 August 2006 - 02:14 PM
Posted 23 August 2006 - 12:01 PM
Posted 23 August 2006 - 12:28 PM
Posted 23 August 2006 - 06:05 PM
Posted 04 September 2006 - 12:33 AM
Posted 04 September 2006 - 04:12 AM
that or an elongated sempervivium(sp?), but i doubt it.
maybe tho. but has the phyllotaxy of persekiopsis. any spines?
any aeration in that soil? doesnt look like any perlite in there:confused:
maybe getter into an airier mix and wait a bit to know for sure.
looks like a Pereskia tho, yes. b good!
Posted 04 September 2006 - 02:22 PM
Posted 04 September 2006 - 06:40 PM
Posted 20 September 2006 - 09:40 PM
Posted 04 January 2007 - 06:45 PM
rooting in cactus potting soil 5 days now
room temp/humidity (70f/55%)
window sunlight (Winter here in Zone 7 - 10.5 hours sun/day)
bottom watered twice so far, quite moist soil
Posted 04 January 2007 - 07:09 PM