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Post by joshcitrus on Nov 15, 2021 20:14:27 GMT -5
I live in zone 7 and plan on growing citrus in a greenhouse. Since I live in Canada, the Niagara region, which has a small pocket of Zone 7, I am quite restricted to which rootstocks I have access to. Mainly, whichever the imported citrus tree come with. I can easily get Flying Dragon rootstock but I want my trees to get a little bit taller and I'm not a fan of the low yields. There's trifoliate orange and c35 which seem like good options, but I'm interested to see if there's any other viable options. My question is this: Has anyone heard of; - Dunstan -U.S 119 citrus -citrumelo hardy grapefruit (Poncirus trifoliata x Citrus paradisi) -Nasnaran mandarin/citrus -Yuzu used successfully as a rootstock, and if so, what types of citrus they're compatible with? I should be able to get access to these varieties to use as my rootstock. I read a research paper comparing Moro blood orange rootstocks and Yuzu performed quite well. What caught my attention was that Yuzu rootstock had the highest yield. However, I've been unable to find any other instances of Yuzu being used as a rootstock, so I can't compare to see how it does on other citrus varieties. Any information on my listed varieties being used as a rootstock and how they perform would be greatly appreciated. www.researchgate.net/publication/288301448_Rootstock_effects_on_yield_fruit_quality_rind_and_juice_color_of_%27Moro%27_blood_orange
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Post by pagnr on Nov 16, 2021 16:35:38 GMT -5
Are you planning on growing inground in the greenhouse, or in containers in the greenhouse ??
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Post by citrange on Nov 16, 2021 17:00:16 GMT -5
Joshcitrus - You must realise that almost everything you read about rootstock performance and yield is going to be completely irrelevant to growing citrus, probably in pots, in a greenhouse in Canada. All these detailed research comparisons are for commercial in-ground growers in commercial citrus growing areas. There are no scientific research papers about rootstocks in pots for your conditions, only growers personal impressions and guesses. The probability is that the environmental conditions you provide will have a far greater effect than the precise rootstock used. Pot size, nutrients and the growing medium, and temperature will have the greatest control on plant size, and if you are heating the greenhouse in winter you don't even need a particularly hardy rootstock. If your watering, aeration and drainage is less than ideal you may need a rootstock that resists phytophthera but otherwise I believe almost anything will do. All citrus are graft compatible in the short term. A few combinations - mainly with lemons - eventually show some decline in the longer term. This matters if you are growing lemons commercially. It probably doesn't if you are growing for your own enjoyment!
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Post by millet on Nov 16, 2021 18:10:45 GMT -5
Excellent information citrange. If I was joshcitrus I would use FD inside a greenhouse.
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Post by ilya11 on Nov 17, 2021 4:19:57 GMT -5
Dunstan is a very strong rootstock, also its seedlings are exceptionally uniform.
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Post by joshcitrus on Nov 17, 2021 12:17:20 GMT -5
Thanks for the replies. I plan on growing inground, and not in containers. I completely understand your explanation and it makes sense citrange. I plan on keeping the greenhouse around 7C (45F) during the winter, but I would like to be prepared with a hardier rootstock just incase I get a really cold snap and/or something malfunctions with my greenhouse heating. I'm thinking of having Flying dragon, trifoliate orange, or C35 as my default rootstocks, but was curious how these other varieties were as rootstocks.
ilya11- Intriguing to hear that Dunstan makes a strong rootstock. Is this from personal experience? I've had difficulties finding info about dunstan rootstocks online.
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Post by ilya11 on Nov 17, 2021 13:55:12 GMT -5
Certainly it is my own experience.
In open ground Dunstan seedlings are pushing up to 50 cm in a season.
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Post by kevin54500 on Dec 2, 2021 7:50:55 GMT -5
hello Ilya that would be superb for its growth! it is very interesting so it would resist -15°C at your place? I have a climate a little colder than you in Nancy ... --15°C in 2012! goodbye
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Post by Sylvain on Dec 2, 2021 8:15:03 GMT -5
You forgot the "°C". You must use "°C" or "°F" to be clear for everyone.
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Post by ilya11 on Dec 3, 2021 7:58:22 GMT -5
Dunstan was less hardy than 5star, it had some frostbites in 2012.
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