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Author Topic: Citreae tribe hardiness  (Read 445 times)

Perplexed

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Citreae tribe hardiness
« on: October 13, 2018, 09:30:32 PM »
What are some relatively cold hardy in this tribe? Other than citrus, fortunella, and poncirus.

Dimitry Fisher

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Re: Citreae tribe hardiness
« Reply #1 on: October 14, 2018, 01:05:17 AM »
Bael (Aegle marmelos) can tolerate temps down to 20F, see https://hort.purdue.edu/newcrop/morton/bael_fruit.html

Perplexed

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Re: Citreae tribe hardiness
« Reply #2 on: October 14, 2018, 01:12:00 AM »
Yeah but like how about in the low teens and below?

SoCal2warm

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Re: Citreae tribe hardiness
« Reply #3 on: October 14, 2018, 01:19:44 AM »
Atalantia glauca, sometimes named "Native Kumquat" or "Desert Lemon" from Australia
Probably not hardy to zone 7 though.

I might quickly mention Acronychia pedunculata here, which has been traditionally used as an ingredient in incense in China and Korea (adds a pleasant warm peppery amber wood and pine smell).

Perplexed

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Re: Citreae tribe hardiness
« Reply #4 on: October 14, 2018, 02:12:26 AM »
Seems like the tribe is mostly subtropical, that's tough

SoCal2warm

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Re: Citreae tribe hardiness
« Reply #5 on: November 05, 2018, 10:36:04 PM »
There is Severinia buxifolia (Chinese Box Orange), supposedly hardy to zone 8 (maybe only 8b).

Hybrids have been made with Citrus:
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47571998000100021

Also quick mention to another only recently discovered rare species, Poncirus polyandra.
« Last Edit: November 05, 2018, 10:47:40 PM by SoCal2warm »

Florian

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Re: Citreae tribe hardiness
« Reply #6 on: November 06, 2018, 12:54:49 PM »
Poncirus polyandra is not as hardy as trifoliata, or so I was told but I do not know how much it can take. The few people who have it do not want to risk their plants (yet).

Zitrusgaertner

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Re: Citreae tribe hardiness
« Reply #7 on: November 07, 2018, 09:26:30 AM »
Florian, Poncirus polyandra is said to be a hybrid, as far as I know.

mikkel

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Re: Citreae tribe hardiness
« Reply #8 on: November 07, 2018, 12:00:04 PM »
P.polyandra is not a hybrid. But I can`t find the pdf right now.
I know of a plant at a german Botanic Garden where it is in open ground. It suffers much from the cold. Snow cover helps a lot.
I had several dieback at -6C but the plant recovered. It is not very vigorous.
« Last Edit: November 07, 2018, 05:36:40 PM by mikkel »

Millet

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Re: Citreae tribe hardiness
« Reply #9 on: November 07, 2018, 03:24:42 PM »
Mikkell is correct, P.polyandra is not a hybrid.

Sylvain

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Re: Citreae tribe hardiness
« Reply #10 on: November 08, 2018, 10:06:33 AM »
Yes.

> Poncirus polyandra is not as hardy as trifoliata, or so I was told but I do not know how much it can take. The few people who have it do not want to risk their plants (yet).
I shall try next winter.

Florian

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Re: Citreae tribe hardiness
« Reply #11 on: November 08, 2018, 02:54:12 PM »
Yes.

> Poncirus polyandra is not as hardy as trifoliata, or so I was told but I do not know how much it can take. The few people who have it do not want to risk their plants (yet).
I shall try next winter.

And I shall follow your tests with great interest :). But Mikkel's remarks are not too encouraging.

 

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