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Messages - Delvi83

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Cold Hardy Citrus / Re: Arctic Frost Satsuma experience
« on: May 25, 2020, 08:03:00 AM »
Did it make new leaves ? or did it die ?

Tropical Fruit Discussion / Re: Growing cherimoya in France
« on: June 28, 2019, 11:39:31 AM »
Sometimes cold damage can be seen during Spring, after the lower winter temperatures.

Cold Hardy Citrus / Re: F2 citrange winter hardiness trial
« on: June 28, 2019, 11:36:41 AM »
Congratulation, it's a very good job !!!

Tropical Fruit Discussion / Re: Couple questions about black sapote.
« on: October 12, 2018, 08:19:43 AM »
In South Italy there are people which are growing it. And as I know it's not been damaged also with 32 F for few hours. I think it could also survive at 30 F...

Cold Hardy Citrus / Re: Report on winter 2017/18
« on: May 20, 2018, 08:45:01 AM »
I observed that poncirus hybrid can lose leaves, without heave damages....for instance, Citran. Thomsaville, can be semi-decidous tree, and even if lose leaves, can bloom and bear fruit the next season...

You must compare plants of the same age, health etc..but to observe the plants is a good tool to understand the local microclimate...I mean, where Lemons trees surivive, Olives won't die for cold...

I think comparison among different species is the only way to understant where a "rare" plant could survive..:)


Bacon should be more cold-hardy than Hass, but less than Mexicola.....I hope the label matches with the cultivar..

Now i don't have place to plant....i was just wondering if what i read is real or just misleading advertising....15 F is a very low temperature, but does not give all information (how long does it last ? which are the max temps. ? etc..)

Also trying on Google you find generic consideration...just a number, not an experiences...for this, to know if after a cold period Mandarin had damaged leaves, and Mexicola not, I would know that it could grow, since Mandarin can...


Reading on Internet i found Bacon is hardy to 23F, Mexicola also 15F......this 8 degrees could be the differences between success and failure

Thanks to All

None of North California or another "not warm winter place" could give us his experiences ?

A. cherimoya, Coffea arabica...

Do lemons trees suffer during winter ? did they ever lose their leaves and "Super-cold hardy" Avovado not?

Along the sea coasts also less cold-hardy Avocado could live....but in the inland zones the climate is quite different, but whit several microclimate.

North Italy is about 44-46 N, but Alps are a barrier against North we have a very long winter, with very lower Max Temp compared to Texas....but there are places, for instance near to the big lakes (Lago Maggiore, Lago di Como etc.) where Mandarin can grow well and also Orange & Lemons withstand the winter....there are places that reach 15 F once every 30 years, but normally don't have less than 23 F....but rarely exceed 50 F in Jan....

In the link below you'll find Data (in Celsius) from the past five years...this is not the warmest microclimate, but I'm sure Mandarin could live, AVocado Hass could not, but Avocado Mexicola ??

Thanks for the info....
Here, in North Italy, I think bloom would not take place before April-May, when temperatures don't drop below 32F......
The problem should be during winter...I was wondering, if in a place where Mandarins survive and bear fruits, could Mexicola live ??
You told us Mexicola should not be the most cold-hardy Avocado....but this is the only One sold in Europe :) !!!

I know the  average temperature of your winter could be more important than a single low temperature....that humidy, max temp. and other factors play a crucial role.....this is why i think it's more important to compare different plants damage, rather than what was the min. temp. or so...

But do you also have Mexicola Avocado ? Was it damaged ?

I'd like to know if somone had Mexicola Avocado, Lemons, Sweet Orange and Tangerine if, after a cold spell, Mexicola had more (or less) damage of each of them...

As I know, for Citrus Lemons is tender than Sweet Orange, that is tender than Tangerine, that is Tender than Satsuma, that is tender than Olive etc.....

If someone, after cold spell, had all Lemons died, Sweet Orange with sever leaves damage, Tangerine & Mexicola with minor leaves damage, and Olive no damage, i'd have more information than "Mexicola survived a single digits (F) temperature"...

I would know that Mexicola is more resistant than Lemon, less than Olive and is more or less cold-hardy as Tangerine....

I know it's not a simple question...but I hope all of you could give us their informations :)

Thanks again

Hi :) !!! Yes....yours are very useful informations !!!

Hass & Reed are not cold-hardy.....

So, now the question is : Did you have more damage with Lemon Trees o Bacon Avocado ? Were they in a similar positions ? and last thing....Mexicola should be hardier than Bacon, so will it be as cold-hardy as Tangerine ? or as the less tender citrus ???

Thanks you and have nice holidays :)

16 you have Mexicola cultivar or other Mexican types ? 15 F for one hour is better than 25 F each night for 3 weeks....or no?
I guess you have very cold spell, but also period of high temperature even in Jan.

Anyway, is Mexicola more cold-hardy than other Mexican Cultivars ? Could you make comparison with other fruit trees? For example, after a very cold period have you observerd more damage in Mexicola or Lemon trees ? or Tangerine trees ? etc...

I tell you this, because here (in North Italy) there are microclimate where Lemons surive, others where LEmons suffer, but Tangerines don't have problem.....Olive can be grown without any problem etc..

If you do this kind of comparison (not only with temperature), I would better understant the limits for Avocado Mexicola....As I know here none has it, but because all people don't know it.


Hi to everyone,

I know most of you  live in subtropical climate, where all Avocado trees can live...

So, this question is addressed to those who live in relative cold climate, where light frost is common during Winter..

I read Avocado Mexicola is the most cold-hardy and can Withstand 15 F...anyway I don't trust and I think that this is only a way to sell more.

Did somone try mexicola in cold climate ? What's the lowest temp recorded ? Could you make comparison with other trees (not only tropical)...for instance, Mexicola vs Lemon after cold spell, or Mexicola vs Tangarine etc...

Thanks for sharing...:)

Cold Hardy Citrus / Re: cold hardy Citrus for zone 7b?
« on: December 16, 2017, 05:34:47 AM »
I think Arctic Frost Satsuma has more or less the same hardiness of other's just a Marketing operation. Anyway i would choose Russian cultivar (es. Sori Satsuma)

Tropical Fruit Discussion / Re: Grafting onto cold hardy Annonas
« on: December 12, 2017, 03:00:48 PM »
I think it's difficult....but some evergreen species can be grafted on decidous species...(es. Orange on Trifoliate)...

So, someone should try to graft Annona c. on Asimina triloba....if it works, Cherymoya could be more cold-hardy (as Citrus grafted on P. trifoliate).

Tropical Fruit Discussion / Re: Dragon Fruit Frost Tolerance
« on: December 12, 2017, 02:57:52 PM »
Are you sure about temperature ??

Cold Hardy Citrus / Re: cold hardy Citrus for zone 7b?
« on: December 12, 2017, 02:52:07 PM »
Citrangenquat "Thomasville" could be a good choice.... :)

Temperate Fruit Discussion / Re: Ugni molinae - autumn crop.
« on: December 12, 2017, 02:17:36 PM »
What's about its cold hardiness ?

Tropical Fruit Discussion / Re: Black spots on young lychee leaves
« on: September 25, 2017, 09:28:26 AM »
In my opinion is health, i would not be worried

Temperate Fruit Discussion / Re: Your favorite zone 8a plants?
« on: September 05, 2017, 12:27:19 PM »
Asimina triloba... :)

Most of us know A. triloba and its fruits....however there are more than other 10 species in the genre of Asimina, most of them grow in the Southest of US (es. Florida)...

I was wondering...does someone grow them? Are Asimina obovata, A. tetramera, A. parviflora or other species edible? How do they taste?


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