flos
Junior Member
Posts: 58
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Post by flos on Jun 6, 2021 9:06:05 GMT -5
I am thinking of making crosses with the eremocitrusses. Im asking myself if it would be more usefull to take the eremorange insteat of the eremocitrus glauca for cold hardy and "tasty" creations. I would take ichangensis or satsumas as Crossing partners for Example...
Any thoughts, Tipps and critiques?
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Post by pagnr on Jun 13, 2021 16:06:08 GMT -5
The eremocitrus is a very hardy Citrus, it naturally grows in a wide area of hot dry summers, up to 40' c. Low summer rainfall. It has been claimed to have extreme cold tolerance. This claim is incorrect on the basis of an error converting degrees C to degrees F. The temperature -24'C does not occur on the Australian continent. This explanation is from Home Citrus Growers UK www.homecitrusgrowers.co.uk/australiannativecitrus/eremocitrusglauca.htmlThis is a remarkable plant that grows in arid, near desert conditions, and can survive some frost. However, it is often said to be hardy to -24C. This is definitely incorrect and arose from an error in the first edition of the reference book 'The Citrus Industry, Vol. 1.' The book stated cold hardiness to......."ten or more degrees below zero Fahrenheit (-5.5C or lower)". But zero Fahrenheit is far colder than -5,5C! What was meant was.........................."ten or more degrees below freezing Fahrenheit (-5.5C or lower)". This conversion would have been correct. The second edition now corrected the wrong part of this error, making the conversion correct but the information wrong. It claimed hardiness to........................"ten or more degrees below zero Fahrenheit (-24C or lower)." Evidence from USA confirms plants do not survive freezes of around -10C. It is probably hardy to about -5C in dry conditions. Your crossing project may still have merit, but maybe not beyond the cold tolerance of the other chosen parent ?? |
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Post by mikkel on Jun 13, 2021 16:48:26 GMT -5
This winter I have had several plants sent to me from Italy. On the way, the package was exposed to frost. I don't know how many degrees below zero it was, but Ichang Papeda was almost dead (Ichang Papeda rosa by Lenzi) Eremocitrus did not suffer any damage.
Apparently Eremocitrus can tolerate some frost.
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flos
Junior Member
Posts: 58
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Post by flos on Jun 20, 2021 14:18:14 GMT -5
Well, ok. So at least there will be just one way to find out. Mikkels experience sounds good butIf the cold hardyness is way lower it makes not really sense for me to cross with eremorange directly...
I think i will make some Backups for cold testing before.
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