In search of Avocado rootstock (forum)

Marmot1 starts with ...
For a long while, I haven't received any info about rootstock supplies in Daleys, especially Zutano or Velvick, does anyone know where to purchase one or two rootstocks for Bacon/Hass/Reed?
Further question is: air layer for rootstocks are feasible? Say, I get one rootstock, then air layer one more, before I failed one tree, I can have some backups.

Background: since June, this year, I have been practicing grafting based on avocados, usually I use anything accessible easily, such as Bacon/Hass/Shepard, the thing is, either the seed is small (as time goes by, I tend more to use young seedlings, one hand it comes across to me the take rate is very high and healing process is shorter, on the other hand I can't wait one year, unless I want to graft both A and B type on one rootstock, so the size of seed matters), or I don't have a farm, so limited space confines my future plan--easy to take care/high yield are foremost.



Time: 15th August 2019 5:06pm

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Markmelb says...
Reed is a pretty good rootstock

Time: 16th August 2019 2:41pm

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Marmot1 says...
thanks for telling me, the Reed scion just take, about 1.5mm big, 4cm long... I think I can rely on it in several years...
I noticed that in Bunnings, they have "avocado mix", not sure of the type. They put "avocado mix" and "avocado hass" together. I soon realized that they used some seed as I could see they, which should not be velvick or zutano.

Time: 17th August 2019 8:13pm

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Original Post was last edited: 17th August 2019 8:14pm
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Markmelb says...
I got a Secondo 2 years ago that was on Velvick - usually they do Reed after they noticed i was having success with it - Zutano is useless in cool climates as it flushes at weird times usually too late only when its above 18c.
Like to get Duke 7 to try?

Time: 18th August 2019 5:59pm

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Marmot1 says...
Thank Markmelb for sharing, I live in Sydney, but sometimes the temperature can go down to 1c, I contact someone in Gumtree, I'm not sure if it's worthy to get a Duke 7 or Zutano. Velvick is kinda much harder to buy.

Time: 19th August 2019 10:59am

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jakfruit etiquette says...
There are methods to produce avocado clonal rootstocks. Something like grow a seed in a half filled deep pot, then graft the clonal onto the seedling.
Later graft the fruiting var onto the clonal. Then fill the empty top of the pot to kill the seedling section and induce roots on the clonal section.
Result is fruiting var on identical clonal rootstocks.


Time: 24th August 2019 3:22pm

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Marmot1 says...
Much appreciated! @jakfruit etiquette I need to get Velvick rootstock first

Time: 25th August 2019 7:53pm

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Markmelb says...
Velvick is supposed to be more salt tolerant and Duke 7 more wet feet and possibly Phytophera tolerant

Time: 28th August 2019 9:09am

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Marmot1 says...
Just got a Reed avocado, and want to keep the seed for rootstock. I noticed today in front of one house, the size of avocados is similar to Reed, yet they turns dark brown/black when they are ripe, not sure of the type.

Time: 29th August 2019 3:47pm

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allybanana says...
Is it possible to lift up an avocado root and graft straight onto the root I have used this method for a variety of trees in the past. Jackfruit that method is hilarious but I think it would work.Perhaps leave the seedling roots attached at the bottom in case they are tougher.

Time: 29th August 2019 5:56pm

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jakfruit etiquette says...
Hi allybanana, yes its very involved.
Imagine a nursery doing 10,000 s.
The clonal rootstocks are identical in growth habit and disease resistance.
In large orchards, this gives less yeild variability under the same farm management.
Seedling rootstocks, even seedlings of the same Avocado variety are slightly to fairly variable.
Its possible that a seedling understock would be a better rootstock than a clonal, but equally worse is possible.
More than likely, leaving the understock would cause problems.
Having identical rootstocks over large areas of farming is not without potential problems either ?
Avocado root grafting ? Not sure they sucker much, wheras many other fruit trees sucker, which might be a factor in success of rootgrafting. I think any rootgrafting of Avocado woud need to be extra hygenic.



Time: 30th August 2019 8:52am

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becrule35 says...
I too am looking for duke7 seeds. Well I want to purchase a duke avo tree actually. I was going to get a zutano but now I’m not so sure since mark said it’s no good for cold climates with the fruiting etc. I would also love velvick too but I know they are hard to find. So how did you guys go with finding the seeds?any luck yet?

Time: 23rd September 2020 6:24pm

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Marmot1 says...
An update:
I haven't got any velvick or zutano rootstocks.
Velvick seedlings are nearly impossible to get--although I suspect that an avocado tree is using velvick labelled as Guatamalan--I could be wrong. I doubt if it's worthy to hurt the avocado tree to force its rootstock to grow shoots.
Zutano tree--weeks ago, daleys had some stock, I hesitated, because @ Markmelb mentioned Reed is a good type of rootstocks. Indeed, I tried Reed, it's pretty amazing.

About Reed, sometimes it doesn't take for the Russel avocado scionwoods, I assume it is Russel, as there's only one tree on that camp site. I grafted 8, among them 4 on Reed seedlings. 6 out of 8 are successful, and for Reed rootstocks, 3 out of 4 are okay, even one scionwood was gradually black(because of mold), it eventually survived and has one shoot. What makes me awkward is the strongest reed rootstock didn't take. So far so good. I will keep using Reed seeds.

Time: 26th October 2020 5:03pm

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Cliffy says...
Hi Marmot1,
I’m new in growing Reed seedlings and how long does it take to germinate and can I use it as rootstock within a year ?

I also have some questions about scionwood that you mentioned, do you mind to contact me via yucliff@gmail.com ?


Time: 10th December 2020 5:23am

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Marmot1 says...
@Cliffy of course you can graft onto a rootstock as long as it's above 6cm high. But it will cause one issue, if you graft too low, and you happen to use soil/mulch to cover the graft point(I don't know the term, and call it graft point for now, hope any native speaker can tell me the exact term, perhaps graft wound?). The scion will probably grow roots.
I will shoot you an email.

Time: 17th December 2020 3:46pm

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jakfruit etiquette says...
The graft union is the common term. It is also a weak point for soil disease infection, so it is often recommended to graft high to avoid irrigation or rain splashing soil onto the union.
Citrus is commonly done at 20 cm .
It is often easier to graft or bud higher than lower, just the physical movements of hands and tools and taping up. Also grafting too low leaves no room for mistakes or repeats. With experience that will be less of a problem.
Some Avos with large seeds are preferred as they give thicker shoots that can graft sooner.
Different grafting techniques may better suit smaller size seedlings.


Time: 17th December 2020 10:09pm

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becrule35 says...
No worries thank you. Also guys do you know where to get an avocado plant tested? I mean for diseases. Just got some avo seedlings that may have had a virus and it has spread to my other avo seedlings and now my avocado plants. Do you guys know what vertical green lines mean? Also vertical red lines on the stems and trunk areas? Also some other strange symptoms. I’m not sure if it’s a bug or virus doing it. When I paint the stems with iv organics it works great and seems to help the trees from getting attacked from what ever is causing the lines.

Time: 28th December 2020 5:02am

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jakfruit etiquette says...
Some pics might be helpful. Have you considered nutrient deficiency or xs . Avocado sun blotch virus has vertical lines as symptoms, but slightly different colours to what you said. ps if the treatment you are using works, is that a permanent fix ??

Time: 28th December 2020 10:21pm

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