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Messages - Marcin

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Citrus General Discussion / Re: Pomelo Kumquat Hybrid
« on: February 03, 2022, 07:58:48 AM »
Reale is a hybrid of 'Monreal' clementine and Fortunella hindsii, developed in Italy. You can find its description in the link:

Reale is triploid, but when cross-pollinated, it produces seeds.

Citrus General Discussion / Re: Pomelo Kumquat Hybrid
« on: February 02, 2022, 05:05:38 AM »
I used limequat as mother plant, and pummelo as father plant.

Citrus General Discussion / Re: Pomelo Kumquat Hybrid
« on: January 27, 2022, 05:13:15 PM »
I tried pummelo x Meiwa kumquat. Also pummelo x Reale mandarinquat and Reale x pummelo.

Citrus General Discussion / Re: Pomelo Kumquat Hybrid
« on: January 25, 2022, 05:07:02 PM »
I've tried to produce pummelo x kumquat hybrid, but with no success. Maybe it needs to be tried again, or perhaps they're not compatible. For the moment I don't know of any viable hybrid between these two species.

However, I've had success with hybridizing limequat with pummelo. The varieties used are probably Tavares limequat and Tahitian pummelo. That seems a good combination, the resulting seedlings were healthy and vigorous.

Sweetie fruits sometimes have seeds. I had grown its seedlings in the past, from my experience they were zygotic and varied a lot. Some were weak, some had acceptable vigor.
Other triploid citrus varieties also can sometimes produce seed. In Persian lime the seeds are said to be rare, but for example Reale hybrid will produce seeds on a regular basis when cross-pollinated. Procimequat also produces seeds despite being triploid (see:

Cold Hardy Citrus / Re: Kumquat x Poncirus
« on: December 08, 2021, 06:32:41 PM »
Thank you all for the replies.
Till, it will be interesting to track your progress with Kucle x Poncirus hybrids.
Vnomonee, Jibro, I'm prepared that they can be harmed or killed by more severe frost. I've made backup copies of the three most promising plants.
Kumin, I find your breeding work really impressive. Maybe when I obtain fruits from these citrumquats, I'll manage to make a selection project similar to yours, although on a much smaller scale.

Cold Hardy Citrus / Re: Kumquat x Poncirus
« on: December 07, 2021, 04:13:36 AM »
Frank, sorry for delayed reply. Last winter these hybrids were exposed to only slight frost, like -5 or -6 C, of course with no damage but that doesn't say much. This year I planted them inground, so the winter will be a real test for them.
They have an interesting trait in that the leaves change colors, but not all drop immediately. Some of them can last on the plant through the winter and become mostly green again. The leaves were already reddish in October, and many still hang on the plants now in the beginning of December and keep the color.

End of October:


Citrus General Discussion / Symptom of tristeza virus?
« on: August 24, 2021, 06:46:51 AM »
I've got a lemon plant with such symptoms visible on old leaves. There is some deformation, and when you look against the light, some leaf veins look bright.

Is that vein clearing symptom related to citrus tristeza virus? Or could it be some other problem?

Cold Hardy Citrus / Re: Kumquat x Poncirus
« on: October 12, 2020, 06:58:25 AM »
Mikkel, unfortunately they were weak and died. It's very rare to get a healthy seedling from Reale.

Cold Hardy Citrus / Re: Kumquat x Poncirus
« on: October 11, 2020, 06:43:08 PM »
Nagami x Poncirus seedlings are changing colors.

My citrus spent the winter in a dark basement. To give them some light, I installed a simple led flashlight and connected it with solar panel. Every day they received 1-2 hours of white light. Nearly no watering. No heating. The lowest temperature in the basement was about 0 C, possibly -1 C. The highest measured was about 6 C. They spent three months underground.

Most of them did fine, except for the most frost sensitive like citron and lime. Satsumas, kumquats and ichangensis didn't lose a single leaf.

Cold Hardy Citrus / Re: N1triVoss
« on: May 03, 2019, 05:33:23 PM »
Usirius, the flowers on your plant look very similar to these of citrangequat 4 saisons.

Cold Hardy Citrus / Re: Citrus tachibana
« on: March 21, 2019, 06:14:28 AM »
High grafting on trifoliate is advised by J. Stewart Nagle in Citrus for the Gulf Coast. It is said to reinforce winter dormancy of the entire plant.

Citrus General Discussion / Re: Yuzu Fingerlime cross
« on: February 01, 2019, 05:52:08 PM »
PDXIan, how do the first two leaves of this seedling look? Are they round and paired like in most citrus seedlings? Or smaller and unpaired? - that would indicate fingerlime parentage.

Cold Hardy Citrus / Re: Citsuma Prague
« on: November 24, 2018, 02:26:20 PM »
Prague leaves display an interesting chimeric pattern before dropping. Almost like a variegata ;)

Citrus Buy, Sell, & Trade / Re: Honey pummelo seeds
« on: November 23, 2018, 08:50:58 AM »
Mikkel, the seeds that I planted unfortunately rotted. I also sent some seeds to one man, and he had success with germination.

Citrus General Discussion / Re: Seedless lime deficiency
« on: November 08, 2018, 08:20:15 AM »
To me it looks like Hualongbing (citrus greening disease).. A deadly disease originating in Asia.
But I have no personal experience with HLB, so let's wait for an expert in that matter.

Cold Hardy Citrus / Re: Large poncyrus fruit!
« on: October 28, 2018, 05:39:21 PM »
For me, a Poncirus fruit with a diameter of 5-6 cm is big.

I've made this photo recently, for comparison. The bigger fruit comes from a standard PT and is 5 cm in diameter. The smaller ones come from a Flying dragon plant and are 3-4 cm in diameter. I've also seen standard PT plants with such small fruits. So there are definitely differences in fruit size depending on the particular plant/cultivar.

Cold Hardy Citrus / Re: N1triVoss
« on: October 20, 2018, 08:35:17 AM »
Yes, cracking of the bark was the main problem.
I wonder how does N1tri compare to Ichang papeda in frost hardiness. I have a small grafted IVIA ichangensis, maybe I'll test it inground when it gets older.

Cold Hardy Citrus / Re: N1triVoss
« on: October 19, 2018, 07:11:31 AM »
I can confirm that N1tri has good frost hardiness.
Last year I planted it inground to see what happens. For the winter covered it with white agrotextile. Winter proved hard, with a minimum of -21 C.

After the winter N1tri was severely damaged but some wood survived. I dug it out and planted again to a pot.

It has recovered fast and is in good condition now. Bark crack is still visible, but healing.

Citrus Buy, Sell, & Trade / Re: Where to buy citrus online (EUROPE)
« on: October 11, 2018, 12:08:39 PM »
I can recommend ADAVO, located in Czech Republic. They ship to Europe.

Cold Hardy Citrus / FD seeds
« on: September 24, 2018, 12:09:17 PM »
I have fresh trifoliate orange seeds to share. It is Flying dragon variety.
If you're interested, PM me.

Cold Hardy Citrus / Re: Kumquat x Poncirus
« on: September 18, 2018, 04:40:24 AM »
Thanks for all your answers.

Mikkel, I've added descriptions to the photos.

Hardyvermont, this could also mean cross incompatibility. I'll try to check that when my Meiwa flowers. Thanks for sharing your observation.

Ilya11, I think the seeds looked more white than typical kumquat seeds, but I haven't removed the seed coats so can't be sure. Yes, I have castrated the flowers.
Nagami - Swamp lemon hybrid sounds good! I hope the cross will succeed.

Cold Hardy Citrus / Kumquat x Poncirus
« on: September 16, 2018, 08:41:36 AM »
Hi. I'd like to share my experiences on crossing kumquat with trifoliate orange.

I've heard many times that it's a really difficult cross to make, but I still wanted to try. So last year I've been making some pollinations.

Nagami kumquat x Flying dragon Poncirus
I used two different Nagami cultivars as the mother plants. Pollinated flowers set fruit easily, and seed set proved not bad. The seedlings germinated quickly, but soon some of them refused growing. Still, the rest is growing fine up till now and I hope they will stay like that. ;)

For comparison - standard Poncirus seedling on the left, Nagami x Poncirus on the right:

Reale mandarinquat x Flying dragon Poncirus
In this cross, fruit and seed set were also not bad, but most of the seedlings proved weak and generally aberrant. Some had strange, narrow leaves, and some were even monofoliate. Maybe these abnormalities are connected with the fact that Reale is triploid. Still, I think that with a bit of luck this cross is worth a try.

So to sum up, I think that crossing kumquat with the trifoliate orange is not such a bad idea. There's a good chance of getting a really cold hardy citrus with quite edible fruits.

What do you think? Have you tried making similar crosses? If yes, have you met any obstacles?

Citrus General Discussion / Re: Red lime?
« on: May 17, 2018, 03:56:21 PM »
Rangpurs are sometimes called red limes. Their fruit is actually orange like a mandarin, and sour. There's also a Rangpur hybrid called Excalibur red lime. It is said to be a local Florida variety.
Another citrus that is called red lime is the Australian blood lime. These fruits can really turn red. The plant is very characteristic in that it has small leaves and big thorns.

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