The Tropical Fruit Forum

.. by approach grafting it onto another seedling?







As you can tell the main stem is drying out, Im wondering if humidity would help it to recover or its heading for certain death?
It started a few days ago, now Im thinking approach grafting it would be the only way to save it (newly formed stem)

(BTW the seedling is not moldy it simply looks brown when its young)

Thanks for the answers, well in 2023 its a bit different I guess

Jesús45
My spanish is a bit rough, so I'll continue in english
I tried calling them but apparently they're busy, Im always redirected to the voicemail

Do we another number we can call them other than this?
+34 69 15 04 162

Did you actually managed to order something from them or what happened?

Can it resprout from the alive bark under soil level? it got cold damage

Mexican avocados they are said to be just as hardy as a lemon tree

Im thinking about starting a few seeds and passively covering them with a portable plastic greenhouse sheet ,maybe a water barrel inside to guarantee the above freezing temps even on colder days

Im in zone 7 but we dont really have less than -8c on an average winter. I still need the hardy ones to survive but at least if i only have to keep them above -6c then its doable with water barrels i thnk

I see it also that way, it might be just a waste of time but I like avocadoes anyway, so planting them might just be a better use of the seeds then throwing them away.
And yes I also have 6 mexican seedlings from ebay, they are doing quite well in my greenhouse

drymifolia: but why dont you just plant del rio, poncho, lila avocado trees, they are allegedly hardy to 8b, or if you need just a little push on the hardiness tolerance, mexican seedlings surely will do the trick

Getting 5000 seeds mexican seeds is not really viable to consider. Getting 3 already consts 10-20USD from Ebay, so 5000 would cost a fortune
The only possiblity I see is to plant a few thousand from supermarket seeds then hope that the desired traits will get expressed so we can finally see a -10C, -12C tolerating and fruiting plant

Hass allegedly has mexican origins so there is a chance, I mean Ive read stories of people seeing an avocado surviving -15C even if it dies back early on, that might mean that at some point it will tolerate that if it gets mature ( at least in theory it should be somewhat possible)

Here: https://garden.org/thread/view/145858/How-To-Grow-A-Cold-Hardy-Avocado-Tree--OUTDOORS--In-Vancouver-Canada/

Ive read that with approach grafting you have less chance for graft incompatibility to occur
Does that only include cheimical incopatibility (virus, fungus attack) or when a more genetically distant scion is used?

To be more concrete...  would it be possible to graft avocado on red bay this way? (Both are in the lauraceae family)

Only Persea schiedeana, the Coyo is in the same group, along with Avocado sub species.
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As the hardiest Persea, survive temperatures down to about −12 °C (10.4 °F)

I cant find anything regarding the cold hardiness of this p. schiedeana plant but sounds interersting, can you link sources? Also is this available anywhere to buy?

So if you have a tree that tolerates 10f/-12C on paper,

Does it mean if I graft one of its seedling with one branch off the tree together then in 3-4 years they will be just as hardy, tolerant of cold, disease etc.. as its non grafted counterpart?

Or the weak point after the graft remains long after the grafting is done and never actually heals 100% only 99% at best?

Follow up question: If thats the case can air layering be a solution to this since its roots and the stem is identical?

I think what those numbers mean when the tree is really mature and have a thick ass bark not exactly a pencil size, more like handball diameter.. so it might even be 5+ years old until it gets there

What I plan to do is a long term project, where the tree possibly will have to have some protection every winter even when mature, but when it finally is mature the chances of it completely dying is quite low, it might take some serious damage at lower temps but it wouldnt die I guess

Any way for now i'll stick to the one I got in my GH as well

Good luck, keep pushing

Bobooski, what was the coldest it has taken with/without damage?