Loading variety overview…
World of CitrusWorld of CitrusUjukitsu
University of California, Riverside — Citrus Variety Collection
https://citrusvariety.ucr.edu/crc3467 (opens in a new tab)
Accessed
Tokurou Shimizu et al. · PLOS ONE · 2016-11-30
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0166969 (opens in a new tab)
Open-access DNA-marker study (CC BY 4.0). Apply only to the study accessions and preserve the authors’ stated identity and parentage limits; it does not by itself establish the identity of every catalog tree or clone bearing a matching cultivar name.
Accessed
The Mulberries
https://themulberries.org/wp-content/uploads/2026/01/Ujukitsu.png (opens in a new tab)
Individual scorecard image for Ujukitsu. The card reports 125 g, 11.5 °Bx and pH 3.5. Printed sweetness/Brix 6/10 and sourness/pH 6.5/10 are combined ratings, not sensory intensity; “Mild” supports low sourness. “None” supports zero bitterness; the printed bitterness preference rating is 10/10. Same-channel video #9 matches all three readings and likely covers the same fruit, counted once. Harvest date, sample count and measurement methods are unspecified.
Accessed
u/Rcarlyle · r/Citrus / Reddit · 2025-04-13
A Gulf Coast container grower reports one Ujukitsu on Flying Dragon with extremely weepy growth and vigorous container roots 13 months after repotting. This is one grower’s plant-specific report, not evidence of cultivar-wide performance or documented pedigree.
Accessed
Amy Grant · Gardening Know How
Secondary article updated 2022-12-01 (the verified update date is not treated as the original publication date). It describes a weeping habit, pear-shaped yellow fruit with thick rind, and season. No formal trial is reported. Its description overlaps the GardenLine profile and is not independent confirmation.
Accessed
Randy Lemmon · GardenLine / NewsRadio 740 KTRH · 2021-01-22
Secondary profile displayed 2021-01-22; the Jan. 20 slug is not date evidence. It describes a weeping habit, fruit shape and ripening, and reports an unsourced mid-20°F survival claim. Its description overlaps Gardening Know How; the two are not independent confirmation.
Accessed
gerdhart, Sylvain and forum contributors · Agrumes-Passion · 2011-04-28
https://agrumes-passion.com/viewtopic.php?t=2249 (opens in a new tab)
French hobbyist thread with posts from 2011–2012. Sylvain described one pear-shaped fruit on 2012-04-10 but said it was not judged ripe. Identity and hardiness claims remain uncertain.
Accessed
Lerouet and forum contributors · Forum Agrumes · 2013-11-30
https://www.forum-agrumes.com/viewtopic.php?f=11&t=280 (opens in a new tab)
French hobbyist thread with grower posts from 2013–2021. Reports include a 2014 seedling height and 2019 shoots on a rootstock reported only as 4475. Some retail identities are questioned; copied fruit descriptions are not firsthand observations.
Accessed
The Mulberries · YouTube
https://www.youtube.com/watch?v=OG6Hrvn4gZc (opens in a new tab)
Summary from transcript: The narrator attributes his fruit to Derek; its 125 g, 11.5 °Bx, and pH 3.5 match the existing same-channel scorecard, so pairing is likely but not explicitly documented. The spoken sensory scores are combined with measurements, not direct intensity ratings; do not treat them as a separate sample or verified instrument display.
Accessed
Garys Grow Your Own Food · YouTube
https://www.youtube.com/watch?v=bhbKuXbMpGs (opens in a new tab)
Summary from transcript: The grower describes one grafted Texas Ujukitsu tree, reporting trifoliate orange below the graft, flood exposure, protected cold episodes, and fruiting/ripening observations. This is one grower’s account; narrated winter timing is imprecise and does not establish cultivar-wide cold hardiness or yield.
Accessed
Scipio · YouTube
https://www.youtube.com/watch?v=zJXNm4f28Ug (opens in a new tab)
Summary from transcript: Scipio describes one Ujukitsu fruit bought from a Taiwan farm seller in mid-December; the opening says “January 26” without a year. The fruit was very juicy with yellow flesh, thick firmly attached rind, and about 11 °Bx by meter. This is one market specimen; sampling date/method are not standardized. Do not apply nearby Kiyomi × Ponkan parentage claim to Ujukitsu.
Accessed
thebellhousevideos · YouTube
https://www.youtube.com/watch?v=88tnuGxjj1I (opens in a new tab)
Summary from transcript: The narrator and family eat fruit from their home tree, describing baseball-sized pear-shaped fruit with a neck, golden-yellow flesh, difficult peeling, and lemonade-like flavor. He reports many seeds and says that tree’s fruit quality improved after a prior hot, drought-stressed year. The title says December 2012; exact harvest date and measurements are unstated. This is one-tree anecdotal evidence.
Accessed
Garys Grow Your Own Food · YouTube
https://www.youtube.com/watch?v=9lKrnp5Pm6s (opens in a new tab)
Summary from transcript: The grower identifies a container-grown Ujukitsu used as backup to an in-ground tree that froze back. He says that tree survived a freeze “down like 12 [degrees]” without exact date or protection details. The mild-lemon/no-tartness remarks are not tied to a specific harvested fruit. This anecdote does not establish an unprotected cold limit.
Accessed
Scipio · YouTube
https://www.youtube.com/watch?v=3x4TbzFSzm8 (opens in a new tab)
Summary from transcript: This English auto-dub repeats Scipio’s Taiwan Ujukitsu/Jeju Hallabong tasting in video #11, including the same 11 °Bx Ujukitsu reading; count it as duplicate coverage of one sample, not a second measurement. It describes sweet-lemonade flavor. Its Hallabong “fully ripe” claim conflicts with the long transcript’s early-picked account and is excluded.
Accessed