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Messages - tedburn

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nice success, congratulation, also the recycling of the pt tops 😉

here is the final update of the survivors (new green buds and no dry back anymore) and the candidates with still mortal risk (dry back goes on or rootstock got cracks) and the Dunstan which is already died.
Due to our very cold April ( coldest since many years) the plants start very slow growing.
The Thomasville had new shot and this was eaten by an unknown insect, so because the plant is still small I put it in a net for protection for a few weeks.

Cold Hardy Citrus / Re: Citrus blossoms
« on: May 02, 2021, 01:49:47 AM »
Hello Citradia, thanks for your pomelo experience. My Chandler had 4 fruits for the first time (in pot), bloomed in march and I harvested one after the other between october and march. None was really bad, but in march was better than october. So let s see if i' m patient enough to let one ripe still a few months longer and if the second fruit year still helps 😉.

Cold Hardy Citrus / Re: Citrus blossoms
« on: May 01, 2021, 02:58:02 AM »
very wonderful citrus pictures citradia thank you, a pleasure to see. How are the rio red fruits are tasting in your climate if ripe ? Because often I read that grapefruits and pomelos dont' getso sweet in our colder climats. Whereas last year I got for the first time fruits of my chandler and for the first fruits of this plant I was positive surprised and very content by tart/ sweetnes.

Iíve lost almost all poncirus hybrids when temps reached 5 degrees F and below over several years. Also lost 10 ft tall dunstan and swingle citrumelos when temps never got above freezing, hovering at or just below 32 degrees F for a week. I lost hybrids when they just started putting out new growth in March, when we got a low of 14 degrees, and these were protected in a high tunnel with water barrels next to each tree. The only hybrids that have survived at my place outdoors without being covered and heated by space heaters for the past decade are Dunstan citrumelo, citradia, and Thomasville citrangequat, and they have died to ground and came back from roots several times. Iíve lost several Dunstan and citradia trees too, but these are the only three specimens that I have left. Iíve lost the following over the years: Dunstan, swingle, citradia, rusk, Changsha, mortan, Nansho dai dai, ichangensis, Ichang lemon, carizo, yuzu. Iíve even lost some potted flying dragon one-year seedlings when zero degrees F all night two nights in a row. The small cracks at base of the tree trunk in spring means the tree is going to die; I had a citradia leaf out in spring despite a crack in base of trunk bark and it died suddenly soon after.

Thanks for your much experiences, very interesting. What I also could observe:
That Thomasville is very cold tolerant, up to now no damage, not even a leave.
That the damages still get more severe the months after the longer deep freeze. Thats really difficult, because I think final result will only be seen in June or July. So I already have lost a Dunstan and my 5* Citrumelo is in pretty bad shape.

Hello vnomonee, that sounds good for a new restart, congratulation. But it is very difficult to tell early after the freeze how severe the damage is.
My Ichangquat 245 looked pretty good in March and now there are still some more twig damages, perhaps also our bad spring this year with always changing warm weather with night freezes stresses the already harmed plants additionally.
So I'm really curious when the citrus start to grow again and finally to see what is then still damaged. At some small buds are already to be seen.
Think to give an update in a few weeks.

Cold Hardy Citrus / Re: Kumquat x Poncirus
« on: April 15, 2021, 12:25:20 AM »
Hello Marcin,
interessting cross.
Which temperatures in this winter did your
Kumquat x Poncirus take ?
Best regards Frank

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 😅.

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

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

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

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

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

Thank you now it also works again on my smartphone  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

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

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

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

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

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

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

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

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.

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

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 😅.

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