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Messages - tedburn

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1
Thanks Lebmung, for adding your experience, yes I think this are very true points. In my case, I know that my plants all have been risky ( young and small) but regarding the last warmer winters and using winter protection I decided the risk to be not so high. So hope for a good recovery this summer 😅.

2
thanks kumin, yes it was an ugly winter in our region

3
In summer 2020 I planted a lot of assumed frosthardy citrus varieties in my garden in ground. Due to the plants have been not so big I hoped to get a mild winter, but counted with the worst. And the winter got worse, we got 4 days and nights enduring frost down to 3,2 F ( - 16 C) and during the days frost with 100% full sunlight.
Heavy test for my citrus. Then from 20.2. it got warmer, but always change a few days warm, followed by colder days with night frost. So I show you the result after the severe winter. Hope it can help you to get more information of cold hardiness of citrus varieties 😋.
Regards Frank

4
Thank you SoCal, very interesting, so we had much more temperature differences and a week with 5 days frost night and day and temperatures down to 3 degree Fahrenheit ( - 16 degree Celsius) and every day 100% full sun which made it worse.
But as far as I see I only lost my Dunstan, all other Citrus survived with more or less damage and some as Morton and  HRS899 a or Ivia and Prague start to get new buds.
If I can reliably report for sure damages and recoveries in some weeks I will make a short report with comparisons and pictures.
best regards Frank

5
very interesting Socal, thank you. Could you still tell us what have been the lowest temps and how long have been the time of consecutive frost days to get a better imagination of what the plants had to take - thanks Frank

6
Citrus General Discussion / Re: LSU Ag Citrus Freeze Damage Video
« on: March 25, 2021, 12:42:12 PM »
Thanks Kumin, very informativ video
best regards Frank

7
Thank you now it also works again on my smartphone  8)

8
was glad to read this yesterday, cause I was also banned with my smartphone ( not with my tablet also android).
So switched off my smarthone today and switched on, but unfortunately im still banned with my smartphone, before the ban a few days ago, never problems with the smartphone to enter in the forum.
@ Murahilin, can you help please ?
Thank you Frank



9
Citrus General Discussion / Re: Grafting pomello on lemon
« on: March 05, 2021, 03:00:32 AM »
Hello, I tried this about two weks ago, so I can' t tell you a final result, but up to now the grafts are green.
I grafted Chandler and Satsuma on an elder well growing lemon. Best regards Frank

10
Cold Hardy Citrus / Re: tetraploid seedlings or plants - how to recognize
« on: February 21, 2021, 02:46:54 AM »
Thanks all for your informations. Read just about Colchicine and as you wrote it can do good and bad depending on dosage, time and usecase.
But when is it used to cause Tetraploidie ? Giving it to plants while building fruits, that then the seeds build tetraploid chromosomes ?
Best regards Frank

11
Hello Ilya,
how do you go on with your 3 very frost hardy hybrids, do you graft them on a mature plant to get early fruits ?
Have you already done this ?
Sorry for the curiousity, but this is a very interesting project ?
Best regards Frank

12
Citrus General Discussion / Re: Grafting on 6 week old seedlings possible ?
« on: February 13, 2021, 05:59:26 PM »
Hello Poncirusguy, yes this is is about the same size than mine. I will still add an update picture

13
50% success, after 10 days the Dunstan/FD graft is growing, as expected the Star ruby/FD graft failed.
But very early grafting is possible though difficult. As it seems there is nearly no lack of growing as if grafting older plants. Regards Frank






14
nice tree, how frosthardy is this satsuma variety ?
Best regards Frank

15
Cold Hardy Citrus / Re: New Jersey Yuzu Growers
« on: January 31, 2021, 02:54:25 PM »
very nice and interesting  :)

16
Til, this was also the thickness of my seedling trunks about 2 mm. If thy take I will post pictures. Good summarize of you to grafting conditions.

17
Yes Millet I' ve seen on you tube, but this is still more complicated and needs special technics and tools.

18
I tried it just now in cleft grafting, I took a Star Ruby and a Dunstan seedling on flying dragon each. The size of the seedlings was  between 3 and 4 inches. But it was difficult because the plants have been in trayers with other plants and the trunks are still very smooth. Dunstan was still easier than Star Ruby.
Other difficulty was to fix and get pressure at the grafting point, also with the smoth trunks.
So I have done it and will see the next days if they dry out or stay green. So wether it works or not It was a new experience. The reasons for the grafting have been that the seedlings are in good groth and the hope to have in spring already graftet plants for getting bigger plants in autumn. But in ever case next grafting will be done with older seedlings 😅.

19
Citrus General Discussion / Grafting on 6 week old seedlings possible ?
« on: January 30, 2021, 02:24:16 AM »
I have a lot of different 4-6 week old citrus seedlings and they are growing nice. So I thought if in this age grafting heals faster. The more difficult handling due to the only 8 to 10 cm high seedlings would be the price. If my theory of faster healing is true.
I will try it the next days. But if everyone has experience, it would be interesting to hear about ?
Best regards Frank

20
Cold Hardy Citrus / Re: tetraploid seedlings or plants - how to recognize
« on: January 24, 2021, 02:25:18 PM »
Thank you Ooli for your informations. In the first look I didn' t find much in the forum, but so I will still have a more intensive look. For the first I' m still not trying breeding citrus, first I still have to gather more informations. But I think citrus breeding is a very very interesting topic, so I will see which flowering citrus I will get in spring/ summer and then looking if something is possible. But I think the practical doing also
needs some experience, so lets see.

21
Cold Hardy Citrus / tetraploid seedlings or plants - how to recognize
« on: January 24, 2021, 04:10:54 AM »
I read a few articles about some advantages of tetraploid citrus, but I couldn' t find out yet, how I can recognize if a seedling or a plant has tetraploid genetic.
Are there citrus species which are as default tetraploid or are there exterial signs e.g. as leaveshape, smell or other exterial attributes ?
Very interested to learn more about ;).

22
Thank you millet, so I hope my seedlngs will be safe 😀

23
Hello from Germany, I' m just storing and eating a few star ruby grapefruits from Florida. They are quite good and I enjoy them. Due to loving citrus plants I also germinated some seeds of them and have a few nice sprouts. But I also asked me the question if I could get HLB over the fruits or over the seeds. I treated the seeds a while in Chinosol and peeled them before planting them, but I don' t know if this would help if there would be a potential risk of infection with HLB or would it either be a too cold climate in Germany for HLB in zone 7 ( 8 in few regions) ? Does everyone know ?
best regards Frank

24
Cold Hardy Citrus / Re: Changsha mandarin opinions
« on: January 18, 2021, 02:42:53 PM »
@Kumin, thank you very much for the two links, they are very much what I looked for 👍👍

25
Cold Hardy Citrus / Re: Changsha mandarin opinions
« on: January 18, 2021, 03:06:20 AM »
Hello Kumin,
nice post which expresses a lot of the difficult but interesting and complex sides of hybridization work. I'm in regard to citrus cultivation at beginner stage but enjoy it very much, so next spring/ summer I expect some more of my citrus varieties flowering and I will also try some small hybridizations with the plants in my citrus yard. What I don' t really know is which citrus varieties are mono-/ polyembryonic, nucellar or zygotic or steril/pollensteril.
All attributes one should know before thinking of doing hybridization. Could you or other experts in the forum show me a link, where the citrus varieties are described concerning their relevant attributes concerning hybridazation ?
This would be very interesting and helpful if such a description exists.
Thanks and best regards Frank

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