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Cold Hardy Citrus / Re: F2 citrange winter hardiness trial
« on: April 12, 2024, 10:39:27 AM »
Did you do anything to speed up flowering?
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Cold Hardy Citrus / Re: Hardy citrus in PNW
« on: April 09, 2024, 12:52:07 PM »
Meiwa did not fare well in a coastal South Carolina trial. It is probably less hardy than other kumquats.
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Citrus General Discussion / Re: Growing oranges in FL
« on: April 06, 2024, 10:59:45 AM »
At the Southeastern Citrus Expo two years ago there was a presentation on this topic. Citrus do well in the shade, but much less yield. Also less attractive to psyllid.
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Cold Hardy Citrus / Re: Southern Frost navel orange
« on: April 02, 2024, 04:21:03 PM »Thank you. Are they completely seedless?I think they have a few seeds, but could be mistaken.
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Cold Hardy Citrus / Re: Southern Frost navel orange
« on: April 02, 2024, 10:56:28 AM »I have them but not growing in the best of conditions so no fruit last year. The grapefruit is delicious. The lemon tastes like a lemon. The satsuma was good.Does anyone know more about this plant's background?What do you think of their other Frosts? Do you have them?
https://citrusindustry.net/2021/12/29/georgia-citrus-varieties-and-history/
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Cold Hardy Citrus / Southern Frost navel orange
« on: April 01, 2024, 10:41:01 PM »
Does anyone know more about this plant's background?
https://citrusindustry.net/2021/12/29/georgia-citrus-varieties-and-history/
https://citrusindustry.net/2021/12/29/georgia-citrus-varieties-and-history/
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Cold Hardy Citrus / Re: Citrus Breeding
« on: March 30, 2024, 10:49:56 AM »I have a question for you on this cross:Pummelo has mostly seeds from sexual crosses. It would be the female parent.
"Pummelo Siamese acidless x Poncirus (fast flowering or Poncirus+)"
I want to use the Banpeiyu for my pomelo since I have a large tree with fruits now so I can do it on the next flower cycle.
Which fruit do I get the pollen from, and which fruit will should be the female to hold the fruit?
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Citrus General Discussion / Re: Trifoliate flower scent?
« on: March 22, 2024, 09:03:16 PM »
This week Precocious Poncirus flowers collected for their pollen were sitting in a small bowl and a faint fragrance came off of them. First time I have noticed any odor.
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Citrus General Discussion / Re: Citrus hystrix/Makrut vs Biasong vs Samuyao
« on: February 01, 2024, 07:43:55 PM »
Juvenile citrus plants frequently have thorns that do not persist in the mature fruiting plant, so your plant may eventually be thornless as an adult.
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Cold Hardy Citrus / Re: What to try in zone 8a-b
« on: February 01, 2024, 07:36:19 PM »
3-3 usually sets fruit, but my 2-2 has never bloomed, so it needs more attention apparently. 2-2 is hardier by at least a couple of degrees. From sampling 2-2 a long time ago, and the 3-3 more recently, 2-2 had more flavor.
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Cold Hardy Citrus / Re: Tremendous Cold Wave coming our way
« on: January 23, 2024, 12:02:20 AM »I put 4 citrus and one olive tree in the ground last spring. I have been researching for about 2 years on how to get them to survive a winter by using 100 watts of electricity (a string of Christmas LIghts) along with plastic, styrofoam and wood chips. I am actually having a problem with them being to warm. Last night it was 16 degrees and inside my set up it was 62 degrees...as you look at my photo the trees are actually 2 feet below the level of the plastic. i planted them 1 foot below ground level and added 1 foot of wood chips. At 10 cents a kilowatt hr...my lights are running at 100 watts an hour. So basically 1 cent an hour to heat my setupThis may help: https://www.homedepot.com/p/15-Amp-120-Volt-AC-Thermo-Cube-Thermostatically-Controlled-Double-Outlet-TC3/100210525
c/Y4QCqHnZ/citrus-trees-3.jpg[/img][/url]
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Cold Hardy Citrus / Re: Ways to protect your citrus trees in ground
« on: December 24, 2023, 08:58:41 PM »
Home Depot has incandescent Christmas lights half price.
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Citrus General Discussion / Re: Uga Changsha fruit already in stores...
« on: December 10, 2023, 03:33:24 PM »14
Cold Hardy Citrus / Re: Southeastern Citrus Expo
« on: November 26, 2023, 03:10:57 PM »Thank you sir! I'm so happy that recordings of the presentations are now being made. I have been 2 of these, and I was always annoyed when I missed one because I was late or speaking to other attendees...It great to be able to go back and find out what I missed the first time.
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Cold Hardy Citrus / Southeastern Citrus Expo
« on: November 25, 2023, 10:37:57 AM »
This year's talks were recorded. Some of the topics are:
Dr. Juan Carlos Melgar, Clemson U - Winners and Losers from the 2022 Christmas freeze.
Hershell Boyd, Madison Citrus - From Zero to 200 Citrus Varieties in 2 Years.
2023 SE Citrus Expo - Confessions of Certified Citruholics
Many thanks to Derick Nantz for his efforts.
https://www.youtube.com/watch?v=VmGyHdsSsGc&list=PLz1OK2nyDTOCgLBukjR7pfXOKK5lv76Ye
Dr. Juan Carlos Melgar, Clemson U - Winners and Losers from the 2022 Christmas freeze.
Hershell Boyd, Madison Citrus - From Zero to 200 Citrus Varieties in 2 Years.
2023 SE Citrus Expo - Confessions of Certified Citruholics
Many thanks to Derick Nantz for his efforts.
https://www.youtube.com/watch?v=VmGyHdsSsGc&list=PLz1OK2nyDTOCgLBukjR7pfXOKK5lv76Ye
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Citrus General Discussion / Re: Minimum age, or minimum size of seedling, for successful grafting?
« on: September 03, 2023, 11:05:40 AM »
http://citrusgrowersstatic.chez.com/web/indexc4ff.php
Does anyone know where the information about seed grafting method is located?
Does anyone know where the information about seed grafting method is located?
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Citrus General Discussion / Re: Minimum age, or minimum size of seedling, for successful grafting?
« on: September 01, 2023, 11:52:31 PM »
On the old forum there was a topic about grafting a sprouted seed onto a rootstock.
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Cold Hardy Citrus / Re: My citrus collection [EU - Antwerp]
« on: August 17, 2023, 10:20:37 AM »Does someone know what causes the leaf stem/veins to turn red like this?What is the current situation? Were you growing these plants under lights set for a long day and then changed to fewer hours/natural light? This occurred on some of my 3/4 poncirus hybrids. Change in day length appeared to turn plants dormant. Poncirus leaves frequently turn color before they fall.
It happens on some of my rooted poncirus cuttings:
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Cold Hardy Citrus / Re: Prague bark damage, sun scald?
« on: June 13, 2023, 03:10:42 PM »
Diluted latex with water sounds like a great idea. I am going to try it too. Will paint the bottom few inches of some trees which have lost all bark from the winter events, will try bridge grafting and inarching.
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Citrus General Discussion / Re: Very Unusual Looking seedlings from Australian Round Lime fruit
« on: June 02, 2023, 03:29:23 PM »
I think those are juvenile leaves.
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Citrus General Discussion / Re: So citrus trees are *not* generally ideally full-sun plants?
« on: June 01, 2023, 11:50:36 AM »
From the Southeastern Citrus Expo
"Dr. Christopher Vincent, Associate Professor Horticultural Sciences University of Florida, will share his research on the effects of water and shade on citrus health, citrus greening, and other citrus growing challenges."
He discussed shade on citrus production. It is a complicated topic, photosynthesis comes to an intermittent stop because of moisture loss in full sun. When stomata are open, CO2 can enter the leaf, but moisture can leave. So stomata close to keep moisture in. It cycles. Spraying a light blocking film on the leaves improved growth.
"Dr. Christopher Vincent, Associate Professor Horticultural Sciences University of Florida, will share his research on the effects of water and shade on citrus health, citrus greening, and other citrus growing challenges."
He discussed shade on citrus production. It is a complicated topic, photosynthesis comes to an intermittent stop because of moisture loss in full sun. When stomata are open, CO2 can enter the leaf, but moisture can leave. So stomata close to keep moisture in. It cycles. Spraying a light blocking film on the leaves improved growth.
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Cold Hardy Citrus / Re: Table of citrus cold hardiness and %zygotic seed
« on: May 29, 2023, 09:58:09 PM »3-3 and Curafora made trifoliate leaves after being crossed with poncirus. No idea how zygotic. The other two have never born fruit.Thank you for creating this resource.
10 Degree Tangerine 3-3 died at 9 F. -12.8 C
10 Degree Tangerine 2-2 survived
CiClem 10 is approximately as hardy as 2-2
Curafora barely survived
Thanks! I'll get those added once I'm back at my computer. Any idea on if any of them give much zygotic seed?
Part of my motivation here is the fact that precious few cold hardy citrus also produce mostly zygotic seeds. There are a lot of hardy citrus, but almost all of them are basically dead ends when it comes to breeding. Identifying the ones that are both cold hardy and zygotic, and creating a reference for them, is something I've noticed is weirdly lacking on the forum and on the internet in general.
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Cold Hardy Citrus / Re: Table of citrus cold hardiness and %zygotic seed
« on: May 29, 2023, 04:55:01 PM »
Thank you for creating this resource.
10 Degree Tangerine 3-3 died at 9 F. -12.8 C
10 Degree Tangerine 2-2 survived
CiClem 10 is approximately as hardy as 2-2
Curafora barely survived
10 Degree Tangerine 3-3 died at 9 F. -12.8 C
10 Degree Tangerine 2-2 survived
CiClem 10 is approximately as hardy as 2-2
Curafora barely survived
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Cold Hardy Citrus / Re: To protect or not to protect
« on: May 05, 2023, 04:30:55 PM »
"But would there be a benefit to keeping them uncovered and able to photosynthesize as long as temperatures were mild, as they usually are in a maritime climate, let's say in the range of 25 to 50 F which is the typical range. It could even be above freezing for weeks at a time."
That is frequently the weather in Zone 8a. My observation is that if there is a benefit from uncovering and recovering it is minimal and given the amount of work required, not worth it.
Fruit of Owari from late blooms were edible when the tree was uncovered in the spring. I don't know how edible it was but if a plant is dormant, wouldn't the fruit be dormant, and then ripen when warmth and light returns.
That is frequently the weather in Zone 8a. My observation is that if there is a benefit from uncovering and recovering it is minimal and given the amount of work required, not worth it.
Fruit of Owari from late blooms were edible when the tree was uncovered in the spring. I don't know how edible it was but if a plant is dormant, wouldn't the fruit be dormant, and then ripen when warmth and light returns.
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Cold Hardy Citrus / Re: To protect or not to protect
« on: May 05, 2023, 03:35:59 PM »
Citrus can be covered with a tarp for the winter and left that way for months without damage. They don't have to be repeatedly covered and uncovered. This has been discussed here and in the older forum a few times.
However, if there is a heavy snow on the tarp it can can break the underlying branches unless there is some additional support.
A tree in Massachusetts kept under a tarp and warmed with aquarium heater in a water barrel kept fruit that were found to be
edible when uncovered in the spring.
However, if there is a heavy snow on the tarp it can can break the underlying branches unless there is some additional support.
A tree in Massachusetts kept under a tarp and warmed with aquarium heater in a water barrel kept fruit that were found to be
edible when uncovered in the spring.