Author Topic: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F  (Read 23055 times)

Perplexed

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I had some Ichangstar60 seedlings, most of them died but about 3 or 4 are coming back from the roots after 4 days below freezing and a low of 9F.

That sounds good, frost hardiness also should get a little better with age and size.
I have a 2 year grafted ichangstar 60 on PT which gets in ground the bext days. Im very excited how hardy it will be compared to my other in ground citrus hybrids.

Yep. This time I'm going to let them grow out and gain some size so they won't die again back 2 back years and die completely. Excited to see how it compares to other zygotic seedlings in the same pot.

tedburn

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Which zygotic  seedlings do you still raise in your pot ?

Perplexed

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I just tossed some Ichangstar60 and N1tri seeds in a pot. So I don't know if its either Ichangstar60 or N1tri, but I'm leaning towards Ichangstar60

tedburn

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After 2 and 3 years in ground most of my hardy citrus gets flowers here

HRS899a


Yuzu x Citrumelo


Chimera Prag



tedburn

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First flowers of Sanford Curafora, planted in ground in 2020

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #105 on: June 02, 2023, 09:46:16 AM »
Keraji after 3 years in ground with first flowers


Unicyclemike

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #106 on: June 08, 2023, 08:38:41 PM »
With your tree flowering in June what time will the fruit be ready to harvest?

Mike Adams

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #107 on: June 09, 2023, 03:43:04 PM »
thats a good question ? While it' s the first time flowers in ground I think I have to harvest in December, depending of first deeper freezes. May be it will not be the sweetest Keraji  ;D.
If interested, I can report  ;). I have also flowering Satsuma Collot at the moment with first flowers, also in ground, so this will be an interesting comparison.
Regards Frank

Unicyclemike

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #108 on: June 14, 2023, 08:07:33 PM »
Yes keep us posted.

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #109 on: June 16, 2023, 03:56:35 AM »
I will do so, today about 40% of my Sanford Curafora fruitlets cut of in the hope of better and earlier ripe fruits  ;)

Peep

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #110 on: June 16, 2023, 02:30:24 PM »
thats a good question ? While it' s the first time flowers in ground I think I have to harvest in December, depending of first deeper freezes. May be it will not be the sweetest Keraji  ;D.

I've heard that Keraji is also still useful when unripe and used as lime. 

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #111 on: June 17, 2023, 02:18:48 AM »
Yes I think this also is possible.
From my other Keraji, in ground but in greenhouse,
I harvested fruit already End of December and the
taste was already good. So in ground out of greenhouse the fruits I suppose will be a little bit later ripe, but before big freezes normally only End of Dec or January in our region, also in ground I expect good fruits, perhaps as you assume not fully sweet but already very useful.
So up to now for me Keraji is one of the best coldhardy citrus regarding cold hardiness and fruit taste !


 tedburn » 27 Déc 2021, 15:49

Aujourd ' hui grande recolte :lol: , l' un et seul fruit de mon première greffe, un citrus keraji.
Le goût de fruit je trouvais bon. Bon le fruit un peut petit
avec 4 cm de diametre, mais je crois que c' est normal pour keraji

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #112 on: June 29, 2023, 01:55:48 PM »
My Sunford Curafora grows nice and has some fruits. Also grafts of Keraji, Nippon Orangequat and new Silverhill, on top, growing well. New graft of Clemyuz22 has been added today.



First fruit of Yuzu x Citrumelo still growing, hope to test the fruit in autumn.







manfromyard

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #113 on: July 01, 2023, 02:18:13 PM »
Yuzu X Citrumelo looks like a very interesting cross. Please update us on the taste when it reaches maturity. That seems like a very probable hardy lemon like fruit...

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #114 on: July 02, 2023, 01:07:30 PM »
Yes sure, if i get it to maturity I will report  ;)

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #115 on: July 23, 2023, 08:27:57 AM »
From 5 blooming citrus in ground keraji and HRS899a lost their fruitlets.
Sanford Curafora, Satsuma Collot and Yuzu x Citrumelo keep their fruits, at least one  ;).
As Yuzu x Citrumelo in the picture grows nice


tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #116 on: August 09, 2023, 12:19:04 PM »
This summer 3 new citrus hybrids planted in ground for winter hardiness test.
On the picture in front a graft of Ichang lemon on Dunstan citrumelo.
Behind FA5  and at an other Place I planted two year old graft of Ichangstar 60 on PT.

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #117 on: August 23, 2023, 03:34:53 PM »
Short fruitupdate of two inground citrusplants

Satsuma Collot with first two fruits, curious to month of ripeness
and taste, shall be a variety of Owari



Yuzu x Citrumelo is good growing, 6 cm diameter now

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #118 on: September 27, 2023, 01:50:00 AM »
Yuzu x Citrumelo,
now nearly about 7 cm in diameter, curious to the ripe fruit but
guess this will still need another 2 to 3 months.
But as citrus nerds we are used to wait  ;)

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #119 on: October 10, 2023, 05:18:30 AM »
Seedling of Nippon Orangequat, 10 months old, shows extremly leathery leaves.
Will plant him in ground next spring, hope that this is also a sign of cold hardiness ?
Does everyone know if there is a correlation between leathery leaves and cold hardiness ?


tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #120 on: October 25, 2023, 11:42:55 AM »
Fruits of inground citrus making good progress to maturity,
current weather forecast sees no bigger freezes the next weeks,
so maturity can go on.


Yuzu x Citrumelo slowly getting yellow. It' s the first fruit so I have no expirience when to pick, but I guess
mid November to mid December should be fine


Sanford Curafora growing good and looks nice, but I think before bigger freezes in January or Februarywill come,   I will have to pick them. One fruit - test pick 3 weeks ago - already made a good tasty refreshing drink.


Satsuma Collot (clone of Owari), two first fruits, look good, size gets acceptable, but still will wait to pick. As I have read best time to pick for Owari should be about December to January.


tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #121 on: October 27, 2023, 06:40:00 AM »
Finally,  ;D, after 4 years in ground I could eat my first delicious
inground citrus fruit, Sanford Curafora, though the fruit got split it was good to eat.
Mild grapefruit and mandarin taste, very juicy.
Always thought it s only ripe and tasty in March or April, but that s not the case, inground
it get s ripe November to December  :P.






BorisR

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #122 on: November 02, 2023, 05:49:18 PM »
Mild grapefruit and mandarin taste, very juicy.
Congratulations! Very interesting.

tedburn

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #123 on: November 04, 2023, 03:55:31 AM »
Thank you Boris   :), in the next few weeks ( depending on freezes), I will still harvest my first fruit/s of Yuzu x Citrumelo, Satsuma Collot and further fruits of Sanford Curafora and taste them.
A tastetest update will follow then  ;).
What s about your climate, should be very good for Citrus in ground ?

BorisR

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Re: Frosthardiness experience with citrusvarieties in zone 7, down to 3,2 F
« Reply #124 on: November 04, 2023, 04:15:20 PM »
I live in Feodosia. The city is open to the north winds. Winters here are quite cold for citrus. Almost always in winter there are several nights with -10 ... -12°C, once in several years it can be -15°C, once in ten years it can be up to -18°C, and once in thirty years it can be colder than -20°C. I have been growing keraji, changsha, Rusk, Margarita for two years in the ground, but I hide them. Keraji is now giving the first harvest. Changsha and Rusk are not bearing fruit yet. This year, fresh grafts of Morton, US-119, citrandarin FA-5 will be wintered.