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Messages - tedburn

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1
What is trifolis?

Trifolis is a Citrumelovariety which is said to have better fruit and
and a very good coldhardiness.

Citrangequat 10-3-4 is as far as I know not available in Europe, at least not under
that name.
We have this, perhaps similar variety:
https://agrumilenzi.it/en/negozio/citrusen/lemons/citrange-quat-4-season-fortunella-margarita-x-poncirus-trifoliata-x-citrus-sinensis/

2
In 2023 a lot of new varieties have been grafted or planted in ground.
Two of them are interesting concerning frosthardiness and
better fruit quality ( hopefully   ;)).

Ichangstar60, grafted in 2021, planted in ground 2023,
no winter damage and now flowerbuds


Trifolis, grafted in 2023 on inground Poncirus,
young graft with no damage in winter and
and now starting to grow



3

Here the positive surprises of my varieties which managed
the winter very good, conditions this winter I already
described in the previous posts.
Dimicelli  grafted in 2023, very thin graft survived and brings new groth


Staraji55, second winter with new groth, no damage at all


Nippon Orangequat first winter, shows new groth


Satsuma Silverhill,right, and Clemyuz 22 small graft left, both grafts of
2023 on Sanford Curafora no damage at all and with new groth



4
Yes, that' s an interesting report from Ilya and very informative.
But winterhardiness is often very different due to multiple
influences as rootstock, plant age, dormancy,location,....
In the first pictures you see left Bloomsweet with no damage and right
Slava Micurina with some leave damage of small twigs, otherwise
Slava is also O.K.
Good example for influence of only different locations and Rootstock of the same variety in
picture 2 and 3.
Picture 2 Dunstan with late morning sun - very healthy. Rootstock Flying Dragon
Picture3 Dunstan with early morning sun - some spolled twigs. Rootstock Poncirus







5
Hello Bussone and Nemaja.
@ Nemaja, thanks for the explanation.
@ Bussone, yes Slava micurina was reported to be cold tolerant more than
-10 degrees C , but as seen in my picture, at the same location im my gardean
nearby planted Bloomsweet and Duncan Grapefruit show no freeze
damage, while slava shows. So I guess slav is not much more hardy
than already pretty hardy Navel oranges.

6
Here all the 1 year old seedlings which have seen several freeze days and -8 C ,
(pictures of Chandler x Bloomsweet I already posted here) now winter damages shows
from dead/heavy damage (N1 tri Voss) to nearly no damage (Citrumelo N82).
Chandler x Bloomsweet now also shows more damage, but slso some still look quite good
as a positive surprise.
Also very interesting how different the frost hardiness within
one variety.
Because the stickers can' t be red, here the varieties
from left (worst) to right (best):
N1 tri Voss, 5* Citrumelo, Yuzu, Chandler x Bloomsweet, Citrumelo N82


7
Interesting trys you are starting, will be interesting to see the developments in the future.
Very interesting that more and more citrusfriends are engaging in trying to make
crossings with the goal of coldhardiness and edible fruits  :D.
Hope that we all have enough patience to cultivate them to bloom and then get
rewarded with success.
Keep on and Good luck  ;)

8
A few weeks of mild temperatures after the freezedays
 in January down to - 10 C most of the inground citrus
took the freeze very good. My worst/ weakest are:

Slave micurina in the back on the right side.

The others are pretty good.
Left in back Bloomsweet, in front of it Duncan Grapefruit and
in front left Nippon Orangequat.



The weakest of my inground citrus is Ichangensis x sinensis.
even a bark crack see in 2. picture






9
Cold Hardy Citrus / Re: F2 Citrandarin (X-639) winter hardiness trial
« on: February 21, 2024, 12:17:10 AM »
Kumin that s an interesting issue. Is it still enough to seperate the seedlings after a year ?
Or is already root weakness concerning hardiness set if they are the first year together in a pot ?
Because up to now I raise a lot in the same pot the first year and then after about one year
I separate the seedlings.
What is your opinion ?

10
I also discocered one such bifoliate seedling in a pot of one year old
Valentine pomelo seedlings in the greenhouse.
In spring I will plant them and the Chandler x Bloomsweet in
open ground and see the next winter ( with good passive protection
what will happen.6

11
First freeze test this winter with about -8 C outside in pots under fleece,
one year old seedlings of a cross Chandler pomelo x Bloomsweet grapefruit.
Some look bad but some  look very good and seem to have  a
quite good cold resistance.






12
Cold Hardy Citrus / Re: Table of citrus cold hardiness and %zygotic seed
« on: February 11, 2024, 02:33:00 PM »
Till, this could be an interesting cross concerning cold hardiness,
but concerning eatly fruit maturing it s perhaps a more late maturing cross ?
Did you already had staraji fruits ? How did they come out concerning
maturity time and fruit quality ?

13
Cold Hardy Citrus / Re: Poorman Orange/New Zealand Grapefruit
« on: February 08, 2024, 01:48:39 PM »
I have one, but overwintering in greenhouse.
I estimate coldhardiness between -7C and -10 C, but
problem is late fruit ripening.
I have first fruits, see pictures, but seems that maturity is late
I guess between April and May, first tested fruits end of January are
edible but still sour.
Chandler is at this time already much more sweet.

14
Today I opened the fleece protections of my inground citrus.
The next day s no freeze in sight, so hopefully the coldest time is behind us
Up to no no real harm to the citrus, some minor leaf damage and
some spoiled late sommer twigs.


HRS 899a looks fresh and good, last year first blooms - now 2024
 hopefully  also fruits


Chimera Prag leaves seem partially spoiled, twigs look good


Big surprise is last Sanford Curafora fruit, I left it for freeze test.
Seems to have a good cold hardiness, temperatures in fleece
have been Tmin - 7 or -8 C.


15
After more than 10 days freeze down to 14F or -10 C and now 3 days very mild weather I inspected my
inground Citrus.
The following 3 pictures show the current status.


1 year old seedling in pots have been in wintertest, only with fleece protection.
Surprising on right side of picture, Valentine - and Chandler x Bloomseet seedlings with nearly no visible damage.
While 5* citrumelo seedlings, on left side, have burnt tips.


Positive surprise,  Citrangerin, unprotected in first winter with no damage


Positive on left side Bigraft Bloomsweet and Staraji55 under fleeceprotection no damage, in 2. winter.
On right side Slava Micurina with burnt new twigs is deceiving concerning hardiness.

Now hoping that February don' t brings still harder freezes  ;)


16
 Seedlings generation 23/24,
all are frosthardy variants with the expectation to
find good seedlings/ plants with better
characteristics than the motherplants, concerning
frosthardiness and/or fruittaste.


All current seedlings, with the exception of clemenules, from own plants
some surely open pollinated while standing all together.
From 1 row to 2 row and left to right:
5* Citrumelo, Sanford Curafora, Kinga, Kinga
Clemenules, Kinga, YuzuxCitrumello x Bloomsweet
Kinga= Unknown parentage, very frosthardy and better fruits than Poncirus,
acidic, no poncirus aftertaste and very low bitternes



YuzuxCitrumello x Bloomsweet, show good development

17
Cold Hardy Citrus / Re: Tremendous Cold Wave coming our way
« on: January 14, 2024, 01:36:16 AM »
Hello Mike, I wish you the best, good useful protection
 and not such an extreme cold. Here in Germany we are already struggling
Since 6 days with freezy temperatures down to 14 F and daytime temperatures below
32 F  or only minimal above and the forecast shows still 7 days ongoing like that.
Let s see and hope the best. In every case for a few seedlings itbwill be a good
Cold hardy test  ;).

18
Citrus General Discussion / Re: when to pick Chandler pummelo?
« on: January 12, 2024, 10:30:16 AM »
The question is, if for pink more heat is required than in our climates,
but I' m already happy now that the taste is good and my heat capacity is
enough for tasty fruits.
If you like coloured flesh with juicy fruit I can recommend you Valentinepomelo.
It' s delicious for eyes and mouth.

19
Citrus General Discussion / Re: when to pick Chandler pummelo?
« on: January 11, 2024, 03:14:38 PM »
The 3. year fruits from my Chandler now, not real big, due to 6 fruits I let on the plant,
but this year it' s a really good and tasty fruit, sweet, juicy and nearly no bitterness.
So I don' t need to regraft   ;) 8).





20
Hi Peep, yes I also be curious to see the differences if the seedlings are grown more in spring/ summer.
I can fully understand your unpatience to make crossings.
But citrus craziness goes like this - first have a few nice plants with flowers and fruits , second collecting more interesting varieties and try/ learn to graft. Third enjoy all that but thinking the frosthardy plant should have better fruits and try/ do crossing - and the citrus crazyness still takes even more times with always great pleasure .
Also in our climate with citrus in ground and citrus in pots you never get bored.
But fourth step is to fight against the problem of not enough space in greenhouse and garden  ;).

21
This summer I tried my first crossings, but only one seems to be successful,
Cross of Yuzu x Citrumelo with Bloomsweet.
The first seedlings show interesting leave shapes, hope this is an indicator for a
succesful cross  :D.

22
Citrus General Discussion / Re: Citrus cocktail
« on: December 29, 2023, 03:28:59 PM »
If you mean Cocktailpomelo, this is a very good pomelo.
For me only Valentinepomelo and
 Tarocco Oranges are still better citrus.
  My Valentine on US987 roots died while producing its first fruit.  I felt so much better after reading so many arcticals of how mediocre its fruits were.  Your statement of excellence just ruined my whole lif.  LOLOL

Don' t worry, be happy  ;), don' t give up, make a new try, in my opinion
its worth  :D. Look at this fruit  :P


23
Citrus General Discussion / Re: Citrus cocktail
« on: December 29, 2023, 12:11:10 PM »
If you mean Cocktailpomelo, this is a very good pomelo.
For me only Valentinepomelo and
 Tarocco Oranges are still better citrus.

24
Thank you, yes first flowers of citrus in ground, challenging climate, and long time waiting is really great and satisfying  :D.
Concerning your question, primarily I use now that the plants are bigger the bricks, especially ones with the shape of a " U", for fixing 4 bamboo sticks to have a framework for fixing the fleece with clamps. So winter protection gets quickly installed. For smaller plants I put the bricks with U form directly together and I think this still brings minimal thermal advantage. For the older/ bigger plants the fleece shall bring a small shorttime isolation and an other very important reason of the fleece is sun protection after very cold freezy nights which we often get between February and May.
Wish you good luck with your citrus and attention, citrus can get
a madness  ;).

25
 ;D 8), 3,5 years now after planting my frosthardy citrus
I could this year now harvest first fruits from my inground
Citrus in zone 7, only passiv protected, exception Satsuma Collot
which I protected with heater below -7 C.


The 3 varieties, Yuzu x Citrumelo, Satsuma Collot and Sanford F2 Curafora



Yuzu x Citrumelo, nearly 40 seeds in the fruit.
Taste of the rind lemony now when ripe. Flesh medium juicy, taste lemon grapefruit mix, light bitterness, but
but not with any aftertaste. Overall not bad for a very frosthardy
Citrushybrid and a good hybrid for further breeding.

Sanford F2 Curafora, after the harvest this year, with nearly ripe
fruits End of November, now for me one of the best frosthardy citrus hybrids.
Taste, mandarin grapefruit taste, very juicy, about 10 seeds per fruit.

Satsuma Collot, very good taste, sweet, nearly no acid. Astonished that already mid/ end of November
fruits are very delicious.



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