Citrus > Cold Hardy Citrus

Citrus damage after freeze

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tedburn:

--- Quote from: Perplexed on December 24, 2022, 09:11:47 PM ---I’ll report on these on Monday, should be above freezing on Monday and should be straight.

It also would be interesting, how d the grafted plants are and how long they have been planted in ground - thanks

5* star citrumelo - Grafted
Dunstan citrumelo - own
Taitri - own
Ichang Papeda - Grafted
Dimicelli - Grafted
Ventura Lemandarin - own
Citrangremo -Grafted
F2 Cirus glauca/finger lime? - own
F2 Citrus australis - own
N1Tri x Citrus - own
Ichangstar60 x Citrus - own
Citrus hongheensis x Citrus - own
Razzlequat - own
Citrus taiwanica - own
Citrus glauca x shek - grafted
All grafted are on poncirus

I also have ornamental trees like Cinnamomum, and Persea I may report on.

--- End quote ---

Unicyclemike:
My question is this.....How much time does it take from formation of flower bud to the actual picking of the fruit? Do they need as much time as apples.....ie May flowers bloom.... to Sept./Oct when the fruit is usually ripened....

poncirsguy:
April flowers ='s  December fruit.

vnomonee:
Depends on the citrus. Some ripen their fruit by fall. Others over the winter or into spring which won't work for me outdoors. I'm only collecting hardy varities that can ripen by the fall, with some exceptions I'm not sure when ninkat x poncirus ripens and pretty sure Yuzu won't color up until December which is too late but then again some citrus can be used before they are ripe. they will be sour, so can be used like a lemon. I don't plan to eat anything hardy I grow fresh off the tree will have to be processed in some way.   


--- Quote from: Unicyclemike on December 29, 2022, 06:11:05 PM ---My question is this.....How much time does it take from formation of flower bud to the actual picking of the fruit? Do they need as much time as apples.....ie May flowers bloom.... to Sept./Oct when the fruit is usually ripened....

--- End quote ---

Citradia:
I was having lows in single digits two days in a row with a known low of 2 degrees F, and not above freezing day and night from Friday through sometime the following Tuesday last week. I also lost power for two hours and couldn’t get generator started Friday morning as temperatures plunged to 8 degrees with a high that day of 11 degrees. All of my store-quality citrus have massive leaf damage but no trunk splits noted yet. Most of my Citradia trees, Dunstan, 80-5, Thomasville, Benton citrange that are unprotected only showing mild to moderate leaf damage. One large citradia on east side of an unheated cold frame with yuzu in it actually looks unscathed for now. The yuzu in unheated frame looks remarkably good with some leaf damage only.

I had to cut back on my use of space heaters due to inadequate amount of electricity to support my 15 outdoor trees in cold frames covered in 4 mil plastic sheeting. Each frame has potted citrus seedlings and grafted trees also. The poncirus hybrids even the newly grafted potted ones are unscathed.

My winners for this event so far with only one 250 watt space heater inside each enclosure are:
Saint Anne Satsuma ; only a few burnt leaves.

Seedless Changsha on flying dragon; few burnt leaves only.

Meiwa kumquat ; no leaf damage but lost all fruit.

Trees with moderate leaf damage in frames:
Croxton
Owari
Kimbrough
Seville sour orange : all fruit lost
Bergamot
Yuzu: unheated frame w 50 gallon water barrel

Trees with severe leaf loss:
Rio Red grapefruit : fruit lost
Changsha : unprotected
Shiranui
Sugar Belle
Ichang lemon

All frames have at least one water barrel and all at least one 250 watt space heater w larger frames having two heaters and two or three barrels.
I’m having another electric outlet installed outside by electrician next Monday.

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