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US-852 hardy Citrandarin

8 years ago
last modified: 8 years ago

This has been an interesting citrus hybrid that we're assuming is US-852 (Changsha mandarin [Citrus reticulata Blanco] x English Large Flowered Trifoliate Orange [Poncirus trifoliata]), originally created in 1965 by Dr. Joe Furr at Indio, California. It was released for use in Florida as a rootstock around 1999, but later discontinued for a number of reasons.

I picked this up at the Citrus Expo in VA Beach a long time ago. Gave it to a friend to grow. It is a quite hardy citrus and actually survived for many years in the ground near Sterling, Northern VA. Assuming a hardiness in the mid single digits F. Only during the vortex years did it finally die to the ground and not come back. But before then, it grew well in a sheltered spot and was able to bear fruit one year. Was it a fluke? Perhaps. But a light covering might have allowed it to survive.

Unfortunately, the fruit ripens in late November after hard frosts, so the fruit must be protected somehow. A fruit was taste-tested back then by some friends of mine, but it had already experienced hard frost, so they were not really able to determine potential fruit quality.

I was able to obtain cuttings of the plant (prior to vortex) and grew up a few in pots. They were moved into my garage for the winter. This summer I finally got some fruit.

On November 12 I picked one off my potted tree. It was quite large and a very pleasing orange color as you can see. The flesh gave just a bit. This fruit had never experienced a freeze, since I brought the plant into my garage just prior to hard frost. So I was finally able to do a good taste test of this fruit!

Nice color and very juicy!

Here were my initial thoughts.

The peel was very thin, but adherent. I had to use a knife to peel it. Peel had slight trifoliate oil smell and taste. My wife could smell it from a ways away!

Flesh was yellow/orange like a juice orange and very juicy. Not the deep orange of a mandarin though. There were probably a dozen seeds present. The flesh smelled a bit of trifoliate. First taste impression was a tartness followed by a very distinct presence of trifoliate oil. I ate one half out of hand. But after eating my Satsumas, I'll probably never eat another Citrandarin this way. It left a slight oil taste in my mouth.

So, then I squeezed the remaining half of the fruit. Got a good amount of juice. Since it was tart and trifoliate-tasting, I added some Equal (half a bag). It was a bit better this way, but still could taste trifoliate oils. Just not very satisfying.

Preliminary Conclusions: This Citrandarin would make an interesting ornamental where hardy (zones 7B and milder). I do not think I would ever eat it out of hand or squeeze for juice unless I was on a Survivor show. But maybe some wouldn't be bothered by it like I am.

So, I decided to wait a few more weeks to see if any remaining fruit on the tree would sweeten up and lose some trifoliate taste over time. I had my doubts about the taste issue.

(later that month)... I tried another Citrandarin two weeks later. This one was very ripe and just fell off the tree. This time the flavor was actually a tad better. I didn't taste as strong a trifoliate oily taste as before .. it was still there though, but not overly obnoxious. No oily aftertaste this time. Not much of a mandarin flavor though, and not sweet ...maybe closer to a unsweetened grapefruit with the unmistakable 'spiciness' of trifoliate. Quite juicy. With some sugar (a lot), it might make an OK ade drink. I would liken it to Morton citrange perhaps.

One more week later : I squeezed yet another Citrandarin. This time, I treated it more like a lime or lemon by diluting the juice with three parts water, and then adding two bags of Equal sugar substitute.

Not bad!

I will very likely do this again if there are no good mandarins available at the supermarket. There are still a handful of Citrandarins left on my trees! Hope you enjoyed my observations!

Comments (10)

  • 8 years ago

    Dave This information is very good for me to hear. I'll stick to my path growing Meiwa, Fukushu kumquats and New Zealand lemonade trees. I found other information that leads me to believe that the Marumi Kumquat may not offer enough to grow here.

    Steve

  • 8 years ago
    last modified: 8 years ago

    John:

    US-852 was discontinued as a propagated rootstock for numerous reasons. One was that it did not produce enough nucellar seedlings...there were enough 'off types' that the seedlings were too varied, so this made it hard to propagate reliably on a large scale for the citrus industry.

    But someone told me it apparently has a very good long-term compatibility with satsumas.

    Apparently the hybrid has been remade by Univ. of Florida and called UF6. It supposedly grows more true from seed.

    Steve: The only reason this variety was of interest to me was because it's very hardy, approaches edibility (LOL), and actually survived and bore fruit in the ground in my region. But it's heplful to know that it does make a good rootstock as well, I suppose.

  • 8 years ago

    Thanks, Dave, that is information I did not know. Anyway, I am a great fan of Macrophylla as a rootstock; that is because of more than 50 years of experience; but it is NOT compatible with Kaffir/Makrut; so I am looking for information and will begin my own trials soon on rootstock compatibility for Kaffirs.

  • 7 years ago

    Hey Dave, I would love to get a couple of cuttings from you if possible.

  • 7 years ago
    last modified: 7 years ago

    Ian, where do you live? I don't have much time to mail out these days. But feel free to stop by if you're ever in northern VA.

  • 7 years ago

    Dave this is an old post that I’d missed. Thanks for sharing your observations!

  • 6 years ago

    I can't believe I'm just now seeing this post. I've been following this particular tree for a couple years after seeing it in Boca Joe's youtube vids. After exchanging a few emails with Joe I learned that you had gotten a few cuttings. I had always been curious as to what happened with them. Has fruit quality improved at all? Perhaps the frost affected the original tree's fruit? Anyway, I was so inspired I bought my own US-852 from Stan this spring in hopes to get something similar. I'm also planning on doing some crosses with my other citrus. Thank you for the update and if you ever feel skippy to mail out cuttings I'd definitely be interested!

  • 6 years ago

    Simmonds Buddies, yes, the fruit ripens too late here. Hard frosts freeze the fruit solid before they ripen. But I kept plants in pots in my protected garage and allowed fruits to ripen that way. They basically fell off when ripe. Left to ripen completely, then squeezed with some sugar and water added, they can make a palatable ade drink.


    I have one in the ground now and it survived its first (mild) winter. I posted about it recently.

  • 3 years ago
    last modified: 3 years ago

    The posts from Boca Joe led me to believe he had a better tasting selection of US 852. I got a plant from Stan and it was a seedling of 852. It is probably a zygotic plant as there are many double flowers on the tree. Some people like it enough to eat out of hand, but I got the impression that Joe's plant, and therefore yours? was good tasting enough to eat without qualification.

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