I just picked and pealed one of my green looking Pink Frosts so that you can see the insides. By the way, I’m just blown away by how much better that piece of fruit tasted than the one I paid $3 for at the farmers market. The one from this morning tasted the way mine did three weeks ago. The reason home grown fruit is so good is because its picked ripe. People who don’t grow their own fruit and don’t go to you pick orchards have no idea what they are missing out on. Anyway, here’s the photo:
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Was your frozen Yuzu on Flying Dragon? I haven’t given mine any protection and its at least 12 years old.
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That looks very nice! That cold hardiness makes me hopeful, too bad I haven’t found somewhere to get it here yet. Does it have the usual grapefruit bitterness or does its sweetness overrule? The bitter side is something I would rather do without in grapefruit. Thank you for sharing.
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My yuzu is on Citrange C5 I believe. It’s in a pot that I move under the eaves during winter.
The tree I referred to was my friend’s tree. He lives quite close to me and his in ground tree was killed a couple of years ago. It was large and beautiful and one winter later it was gone.
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Mine has survived low double digits, maybe single digits as well as snow against the trunk. probably not at the same time. Mine is on Flying dragon and grown really slowly with inadequate nitrogen.
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JohannsGarden - half the time i do research on unusual fruiting plants, roads lead to Growing Fruit and … there you are ;). excellent contributions, and using exceptional sources.
only today have i begun looking deeper at citrus that tolerate zone 7.
i’m sharing this list of cold-hardy citrus just for the heck of it, Mckenzie-Farms
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So is UGA Pink Frost a plant that’s was bred recently or is it an irradiated variant of an older variety?
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Supposedly it’s an irradiated version of “Bruce Grapefruit”. The lack of information means I didn’t trust it enough to buy it. But might have to reconsider in the spring…
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Found the patents for two of them:
You can search for patents by the author’s name, but the rest were grasses (exciting) unless I missed one.
The mandarin and lemon seem to be irradiated seedlings of Changsha and Ichang Lemon as believed.
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What does this do to growing plants? I know in fruits, it makes the seeds not viable.
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Dr. Hanna used it to remove the seeds. The ichang and Changsha are decent cold hardy fruit, but extremely seedy.
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Interesting… thank you
In the interesting trivia department, radiation treatment almost always “breaks” existing genes and almost never creates something new and useful from the plant’s perspective. In the process of breaking genes, it can sometimes disable an entire biopath such as the one that makes seed. Nature does this but at a very low level due to background radiation.
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That was my understanding from reading on the TFF, but it’s good to have the patents since you never know with forums alone.
Yeah I’ve yet to find anything about this grapefruit. I wonder if not patenting it was on purpose.
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Or buy some citrus brought in big diesel trucks from regions that grow it much more efficiently. This is arguably often the best eco choice if that happens to be the issue with you.
It is even suggested by some who crunch the numbers that vegetables trucked from CA can create less of a carbon footprint then locally purchased produce in regions with less productive climates. .However, it certainly isn’t true when compared to vegies that grow outdoors on your own property. If you put a price on your time, it is more expensive, but if you call your gardening recreation and your garden your private gym the equation turns upside down. Not only that, but I’m guessing that serious gardening, including vegetables and fruit, tends to lead to relatively good health and little obesity.
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My post was two years ago. I can’t remember that I said last month.
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It was trademarked (the name), but not patented (the variety). So no records on Brix, production, hardiness, etc. Which is why I wanted to wait till more people reported results.
I got burnt with “Arctic Frost” satsuma some years ago. Marketing hype on all levels…
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When you forget what you are doing, it is getting bad. When you forget your name… hang it up. Seriously! Put your name over your door so you can remember who you are. 
I’m wishing I could grow more citrus than these poncirus in my front yard.
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Ahh well, that’s not too bad, my dad can’t remember what he had for breakfast. As long as you don’t forget that you forgot, you’re in the clear.
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I suspect Dunstan would have a chance in your zone. Once it’s had two or three years of growth it seems to handle single digits alright. Seedy, but otherwise a pretty decent fruit that’s like a less bitter grapefruit.
I’m working on some other hardy crosses, but it’ll be a while before they’re ready.
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