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Have always heard the opposite and in my experience longans are far more sensitive than lychees. I am in 9B and longans are borderline trees. Mine stayed alive but barely grew while my lychees do really well.
Quote from: Tropheus76 on April 16, 2020, 02:57:44 PMHave always heard the opposite and in my experience longans are far more sensitive than lychees. I am in 9B and longans are borderline trees. Mine stayed alive but barely grew while my lychees do really well.Hmm.. I see conflicting evidence all over the web.And in my personal experience,I started about 200 longan seedlings and 100 or so lychee seedlings last summer, and scattered them all throughout different microclimates on the property (slightly different elevations, full sun and full shade, some more exposed to wind and frost than others).. none grew over a foot in height when winter came about. We got about 12 brief frosts this past winter (lowest temp 27 F) and not a single longan that I observed suffered any frost damage. However about half the seedling lychees had significant damage to their leaves (However I think much of this damage occured in the first cold event when it dropped from 85 F to 40 F in 6 hours. Not much further damage seemed to occur when actual frosts started to hit, because the plants were acclimated by then..) So, I don't know yet. Maybe longans are more frost tolerant but more sensitive lower temps (which is a separate factor than frost)..? I'll likely find out in the years to come..Also what are some Chinese longan varieties? Does Kohala have Chinese heritage?
As a general rule look at the order of harvest and the later they are the more cold tolerant the variety.Order of Harvest of Lychees Chinese Names. The lower on the list the more cold tolerant. Sum yee hong is yook ho pow, tai so is Mauritius,souey tung is groff,kwai mai pink is the same as Bosworth and should have been at the top of the list.Sum Yee HongSouey TungBah LupFay Zee SiuTai SoHaak YipKwa LokChong Yun HongTim NaanSai Kok ZeeHeong LaiNo Mai Chee (standard)Seong Sue WaiAh Neong HaiSoot Wai ZeeWai Chee
Yes and minimum chill to induce flowering is a pretty good guide and yeah 4c or 5c sounds about right.