The Tropical Fruit Forum
Citrus => Cold Hardy Citrus => Topic started by: will2358 on July 21, 2019, 01:47:20 PM
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Does anyone know how hardy C35 Citrange is? My Changshou quat rootstock is C35 Citrange . I want to know if I need to graft some of it to trifoliata when it gets a little larger.
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C-35 hardiness is contingent upon it's state of dormancy. It's hardiness is best under steady cold conditions.
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The origin of C35 was a seedling of Ruby orange x Webber-Fawcet trifoliate, made in 1951. UCR released it in 1986. Trees on C35 have relatively good freeze tolerance where the climate induces dormancy. As Kumin wrote, in climates with warmer winter temperatures, such as Florida and Texas, trees may be much less freeze tolerant. However, they are typically somewhat more susceptibleto freezes than those on Trifoliate. Fruit also has relatively good freeze tolerance. C35 has good compatibility with all oranges, grapefruit, and Lisbon lemons, but strong incompatible with Eureka lemon. Nearly all mandarins perform well for at least 10 to 15 years, but many eventually develop bud union crease and decline. Lastly, C35 is well adapted to loam, sandy loam and sandy soil, May perform poorly on very heavy soils with poor drainage Poor tolerance to soils having high chlorides and also calcareous soils, where it is somewhat worse than Carrizo
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I think by the time I get good at grafting it should be large enough to take cuttings and graft it to one of the trifoliata cuttings I took a couple days ago.
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Your best bet at this time, without knowing the composition of your soil and without knowing the preferences of your citrus i to graft on standard poncirus. You can graft it now using a cleft or a chip
You can wait till later when the temp drops or you can wait till spring is near and bud it then.
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Your best bet at this time, without knowing the composition of your soil and without knowing the preferences of your citrus i to graft on standard poncirus. You can graft it now using a cleft or a chip
You can wait till later when the temp drops or you can wait till spring is near and bud it then.
My quat is not very large so I will wait til next spring. This will give me time to learn how to graft.
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Does anyone know how hardy C35 Citrange is?
In your location, I wouldn't worry about the hardiness of citrange. It's most likely going to be hardier than anything you graft onto it.
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My C35 defoliated and lost smaller twigs at 10F. I have a changshu on C35. Here in Cincinnati Ohio it has been outside for 25 of 31 nights in January. 17 out of 29 nights in February, and has only been inside for 2 nights in March. Changsha dies long before C35 does in cold.
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Has anyone grown out C35 and tried it on its own merits? What's it like as a cold-hardy citrange?
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My well cold acclimated C35 was decimated in 10F freeze
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Millet, you probably know the answer to this question I have. Do you know what rootstock was typically used here in Orange County CA back in the days when we had all the orange groves?
Most trees in Orange County were Valencia and Washington navel oranges back then. There are still many of the original orange trees scattered around in various yards and city property..
I'm asking this question since I know of 4 large rootstock trees that fruits yearly and wanted to find out what rootstock variety it was. I have the fruits and can show you the leaves if that helps..
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I don't know for certain what the Orange county root stocks were back then, but the two most rootstocks at that time in California were Troyer and Carrizo.
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I read the fruit taste description on UCR database and it says it is "strongly acid and bitter".
But the fruits I have pick and tasted are not that acidic or bitter. Do you know any details on the C-35 fruit flavor?
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I just tasted the fruit again, it is not bad, not even as acidic as a lemon.. The brix =15, so it is not sour..
If I post a photo here of the fruit and leaves, do you think you can identify the rootstock for me?
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Here's some photos, if anyone can identify what rootstock this is, I appreciate it.
Thanks..
(https://i.postimg.cc/KjbYgbVj/Rootstock-Bike-Path-Tree-12-20-23-Pic2.jpg) (https://postimages.org/)
(https://i.postimg.cc/3J7B3DL5/Rootstock-Bike-Path-Tree-12-20-23-Pic6.jpg) (https://postimages.org/)
(https://i.postimg.cc/8zXBdXTN/Rootstock-Bike-Path-Tree-12-20-23-Pic7.jpg) (https://postimages.org/)
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Looking at the first picture (a well developed root stock picture) it certainly looks to be either a Carrizo or Troyer Citrange rootstock. However, I have no idea what variety was grafted onto the rootstock in your picture. Troyer and Carrizo citranges were developed in 1909 as sister rootstocks from a cross between Washington navel orange X Trifoliate Orange).
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Here's some fruit photos..
(https://i.postimg.cc/D0Ldh1JD/Rootstock-Bike-Path-Fruits-12-20-23-Pic11.jpg) (https://postimages.org/)
(https://i.postimg.cc/qvjcpJqk/Rootstock-Bike-Path-Fruits-12-20-23-Pic13.jpg) (https://postimages.org/)
(https://i.postimg.cc/RhBJcyhs/Rootstock-Bike-Path-Fruits-12-20-23-Pic14.jpg) (https://postimages.org/)
(https://i.postimg.cc/jjnDBtJ3/Rootstock-Bike-Path-Fruits-12-20-23-Pic16.jpg) (https://postimages.org/)
(https://i.postimg.cc/nhgz4gw4/Rootstock-Bike-Path-Fruits-12-20-23-Pic17.jpg) (https://postimages.org/)
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Here's the leaves photos:
(https://i.postimg.cc/FK1JV0ZS/Rootstock-Bike-Path-Leaves-12-20-23-Pic1.jpg) (https://postimages.org/)
(https://i.postimg.cc/C5CZx7F3/Rootstock-Bike-Path-Leaves-12-20-23-Pic2.jpg) (https://postimages.org/)
(https://i.postimg.cc/pXZhNsc8/Rootstock-Bike-Path-Leaves-12-20-23-Pic3.jpg) (https://postimages.org/).
(https://i.postimg.cc/zvNB6hn0/Rootstock-Bike-Path-Leaves-12-20-23-Pic4.jpg) (https://postimages.org/)
(https://i.postimg.cc/SsFNY9tk/Rootstock-Bike-Path-Leaves-12-20-23-Pic5.jpg) (https://postimages.org/)
(https://i.postimg.cc/prk2S6VL/Rootstock-Bike-Path-Leaves-12-20-23-Pic6.jpg) (https://postimages.org/)
.
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Here's seeds from 10 fruits that I removed today..
(https://i.postimg.cc/vm7Z5ZJ9/Rootstock-Bike-Path-Seeds-12-20-23-Pic3.jpg) (https://postimages.org/)
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Millet, to answer your question of "However, I have no idea what variety was grafted onto the rootstock in your picture."
These trees were all grafted with Valencia oranges and Washington navel oranges. One of the four trees still had the named variety growing with fruits on it. That is the first tree in foreground in the first photo.
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Excellent photos, great clarity showing details of the fruits, foliage and tree form. I've forwarded some of the pictures to a German colleague and he's leaning towards Carrizo Citrange, largely due to the short and broad central leaflet. The deep orange color is in strong contrast to the bright yellow color of my potential C-35 fruits.
(https://i.postimg.cc/674dKPRy/PXL-20231122-171423517.jpg) (https://postimg.cc/674dKPRy)
Possible C-35 Citrange rinds. Clear yellow without appreciable orange tint.
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Thanks kumin. I did read that most of these trees had either the C-35 or Carrizo Citrange rootstock at the time these were planted.
So Carrizo Citrange it is, mystery solved..