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World of CitrusWorld of CitrusShiranui Mandarin
University of California, Riverside — Citrus Variety Collection
https://citrusvariety.ucr.edu/crc4249 (opens in a new tab)
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The Mulberries · YouTube · 2026-05-14
https://www.youtube.com/watch?v=3BPp5SNEsmU (opens in a new tab)
Summary from transcript: At 42:41–43:56, the presenter compares two Shiranui trees on X-639 and trifoliate rootstocks.
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Graham H. Barry; Marco Caruso; Frederick G. Gmitter Jr. · ScienceDirect Topics (Elsevier); chapter published by Woodhead Publishing
Attributable excerpt from “Chapter 5 – Commercial scion varieties,” §Shiranuhi (catalog Shiranui): section 5.6.1, paragraph B978012812163400005X-p0670; in The Genus Citrus (2020), pp. s83–s104, DOI 10.1016/B978-0-12-812163-4.00005-X. The topic page exposes selected chapter text, not the full chapter.
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finestcitygarden · YouTube
https://www.youtube.com/watch?v=aj_cOk9m8ak (opens in a new tab)
Summary from transcript: English auto-generated captions cover 0:00–12:21 of 12:25. At 4:01–4:18 the presenter identifies a Shiranui fruit grown at his San Diego home and comments that it peels easily but has more pith than Gold Nugget/Tahoe Gold. A separate store label is shown at 4:21–4:35 and compared under the marketing name “Sumo”; the video later says Shiranui aka Sumo at 8:52. The tasters describe a Shiranui sample at 9:03–9:24 with vegetable/salad and cucumber-like notes, and at 9:24–9:30 react positively. The comparison is dated January 25, 2025 (1:09–1:18); no instrumental measurements are reported.
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The Mulberries
https://themulberries.org/wp-content/uploads/2026/01/Shiranui-1-1-1086x1536.png (opens in a new tab)
Individual scorecard image for Shiranui mandarin. The printed preference ratings are sweetness 10/10, sourness 6/10 and bitterness 10/10; the linked fruit reference preserves these original ratings alongside catalog numeric scores. Sweetness is stored as printed; sourness and bitterness use 10 minus the printed score. Any Brix or pH printed on the card is a separate reading, not derived from ratings. Sample method and harvest date are not stated unless noted in the reference.
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Greg Alder · Yard Posts · 2023-03-10
https://gregalder.com/yardposts/the-shiranui-mandarin-tree-a-profile/ (opens in a new tab)
Grower account from the author’s San Diego County tree: he reports a protruding neck on most but not all fruit, good flavor from late January and fruit becoming too sweet sometime in April, along with vigorous growth and heavy cropping. He reports seedless fruit from his tree but notes UCR seed observations for CRC 4249 / VI 860 at Riverside and Exeter; these reports are accession- and site-specific, not a cultivar-wide seedlessness claim. The article also gives a secondary account of the Sumo brand and commercial history.
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USDA APHIS Systematic Entomology Laboratory, Identification Technology Program
https://idtools.org/citrus_id/index.cfm?packageID=1179&entityID=8814 (opens in a new tab)
Citrus ID, Edition 2 (October 2011), “Origin,” “Description,” and “References.” The origin note attributes a Kiyomi × Ponkan account and naming history to the Chiefland Budwood Facility’s 2010 annual report for clone DPI-132. The description gives general morphology; the additional statement that fruit is seedless and highly sweet is specifically about DPI-132. Keep clone-specific claims separate from UCR CRC 4249 / VI 860 seed observations.
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Everglades Farm · 2026-05-26
https://everglades.farm/blogs/news/how-to-grow-a-healthy-shiranui-mandarin-tree (opens in a new tab)
Nursery guidance specific to Shiranui says the tree is particularly frost-sensitive and recommends shelter and graft-union protection. The adjacent brief-cold tolerance statement is about mandarins generally, not a Shiranui trial or measured injury threshold; no numeric Shiranui hardiness value is recorded.
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Gardenia
https://www.gardenia.net/plant/citrus-reticulata-decopon-sumo-oranges (opens in a new tab)
Secondary gardening page associates Shiranui with Dekopon/Sumo and lists general January–March ripening, 8–10 ounce fruit, easy peeling and seedlessness. These are unattributed listing estimates and broad marketing/gardening claims, not an accession-specific sample or trial; the categorical seedlessness claim does not supersede UCR CRC 4249 / VI 860 seed observations.
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Thread participants (indexed first-page material only) · Growing Fruit
https://www.growingfruit.org/t/shiranui-dekopon-aka-sumo-mandarin/21349 (opens in a new tab)
The direct thread was inaccessible; notes use indexed text from its first page only. Opening post by ramv, April 3, 2019, reports store fruit usually seedless but occasionally with a seed or two, and says planted seeds germinated; it also gives a subjective eating preference. These are user reports, not a controlled sample or cultivar-wide seedlessness claim. Other posts are separate participants and observations; this source does not represent the full thread.
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Sumo Citrus
https://sumocitrus.com/from-dekopon-to-sumo-citrus/ (opens in a new tab)
Official brand account says its U.S. seedlings arrived in 1998 and its product debuted publicly in 2011, and describes its January–April market window. The page also markets Sumo as sweet, easy-peeling and naturally seedless. Use the dates only as the brand’s account of its commercial history; its broad seedlessness and quality claims are marketing, not independent accession or fruit-trial evidence.
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Greg Alder · YouTube
https://www.youtube.com/watch?v=s_oyzs4Vh74 (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:01–5:35. At 1:35–1:57, the grower describes variable stem-end knobs on fruit from his home tree; at 1:59–2:33, he reports vigorous growth and productivity. He describes one opened fruit as thick-rinded but easy to peel, with large firm juice vesicles and a sweet, tart, grapefruit-like flavor (2:51–5:11). He says fruit from his tree has been seedless, while cross-pollination may produce seeds (3:46–4:09). One fruit tasting and owner observations; location is not clearly named in captions.
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Greg Alder · YouTube
https://www.youtube.com/watch?v=4LiyVlkMhGc (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:01–10:34. In a Southern California comparison dated in-video March 10, the grower tastes one Shiranui alongside one Pixie and one Gold Nugget. He describes the Shiranui as largest of the three, easy to peel, with large firm juice vesicles; his home-tree fruit have been seedless, though he reports other growers sometimes find seeds near pollen sources. He calls this sample complex with a grapefruit hint; his wife prefers its acidity/tartness (0:49–10:13). Qualitative comparison, not scorecard ratings or instrument readings.
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The Mulberries · YouTube
https://www.youtube.com/watch?v=15TVv_BtQfo (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:01–21:21. This store-fruit tasting is the same episode represented by the existing Shiranui scorecard source; treat it as one tasting, not a second independent sample. The captions describe a 230 g fruit, report 18 °Bx and pH 4.3, and discuss peel, seeds, juiciness and flavor. Linkage to the card is strong but the episode also mentions a second 228 g fruit, so keep exact fruit-to-card identity cautious.
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What Plant is that, Paul? · YouTube
https://www.youtube.com/watch?v=iTXP2JnCxvI (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:00–1:08:40. Paul interviews commercial grower Tim George at George Farm in San Diego. George distinguishes the Sumo Citrus brand from the variety and reports that seed presence can vary with cross-pollination; he says two seeds had been found on their block so far that year and recalls earlier fruit with five or six seeds (1:48–3:03). This is a commercial-grower account, not a controlled pollination trial; the transcript’s cultivar-lineage wording is too noisy to use as ancestry evidence.
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Franken fruits · YouTube
https://www.youtube.com/watch?v=XQFpwH0QtKY (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:00–4:39. The grower identifies the fruit as homegrown Dekopon/Shiranui/Sumo and says his small tree is in its fifth fruiting year (0:00–2:32); units for the stated tree dimensions are not given. He describes the fruit as easy-peeling and aromatic, with segments that separate easily, and compares its flavor to mandarin candy (3:06–4:08). He picks a couple of fruit, but the tasted-fruit count is unclear; these are qualitative grower observations without instrument readings.
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All My Hobbies · YouTube
https://www.youtube.com/watch?v=Iplub6iTsJA (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:00–2:59. The grower in the Lower Mainland, British Columbia, tastes one homegrown container fruit picked on May 30 (year not stated). He reports a weight of 221 g, easy peeling, good segmentation, and no seeds in this fruit (0:34–1:38). He says it was not sour and not extremely sweet; a “15%” sugar-test reading is reported, but the captions do not identify the instrument or unit, so it is not recorded as °Brix (1:42–2:44). Rainy conditions raised concern about mold and premature picking.
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Your Weekend Gardener · YouTube
https://www.youtube.com/watch?v=RYLHh63-oAg (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:02–8:50; the Shiranui segment begins at 5:01. The presenter tastes a likely store-bought Sumo fruit, describing easy peeling and good aroma, no seeds in the shown fruit, and a juicy taste that is good but not very sweet (5:33–8:14). Sample count and exact sourcing are unclear; the comparison to a fruit from Brazil refers to an earlier video, not this specimen.
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Tough Citrus · YouTube
https://www.youtube.com/watch?v=bMJLHs_7Ky0 (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:00–4:57. This is a planting video, not a tasting or observed freeze test. The grower says Shiranui is not his hardiest citrus and expects it may tolerate low-20s or high-teens temperatures beneath a protected grove canopy (0:39–1:36); this is an expectation, not a measured survival threshold or hardiness trial.
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JTNE Backyard Orchard · YouTube
https://www.youtube.com/watch?v=lKL765IuL90 (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:00–24:27. A Central California grower compares a first-crop homegrown Shiranui/Sumo fruit with store fruits bearing Sumo and Shiranui/Dekapon labels (3:08–4:08). He describes peelability, sweetness and acidity separately for these specimens; his homegrown fruit had at least two seeds, which he attributes to pollination (19:29–20:53). A spoken Jan. 11 date lacks a year, and the captions’ “12/15 high” reading is ambiguous; do not record a Brix value or combine the different fruit samples.
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Earth Monkey · YouTube
https://www.youtube.com/watch?v=mbMFjSJM8c8 (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:00–2:10. The presenter tastes one purchased Dekopon in downtown Vancouver and says two fruit were bought (1:28–1:40). He describes this fruit as very juicy, initially sweet with a strong sour finish and a slight pineapple-like note (0:53–1:27). These are subjective impressions of one store fruit; no instrument readings are reported.
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Nat Backyard Garden · YouTube
https://www.youtube.com/watch?v=wcE0E4x0Oco (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:00–18:36 and include two separate tasting contexts. In the first, an under-ripe homegrown greenhouse fruit is compared with a store fruit; speaker-reported refractometer readings are 17.1 and 17.2, respectively (2:21–3:21). A later follow-up describes a young, heavily cropped greenhouse tree and a separate tasting with reported readings of 20 and 21 (4:28–14:55). These readings were not visually verified; the samples and contexts must remain separate, and the informal preference estimate is not a panel result.
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okraw (John Kohler) · YouTube
https://www.youtube.com/watch?v=NHYO_Qe7sm8 (opens in a new tab)
Summary from transcript: Auto-generated captions cover 0:00–6:21. The presenter compares one fruit from a friend’s greenhouse in Missouri with one California store fruit refrigerated for about two weeks (0:38–1:16; 2:01–2:50). He describes the fresh fruit as easier to peel, fresher, juicier and sweeter, while the stored fruit seems drier/older (2:54–4:58). Storage age is a major confound; these observations are not an outdoor Missouri hardiness trial or a general cultivar comparison.
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National Agriculture and Food Research Organization (NARO)
https://www.naro.go.jp/laboratory/nifts/kih/citrus_cat/post_70.html (opens in a new tab)
Official NARO cultivar entry, “不知火(しらぬひ).” The cross table identifies Kiyomi × Nakano No. 3 Ponkan and gives crossing year 1972 (lines 84–89); lines 71–82 state the cultivar was not registered under the cultivar-registration system. This source supports the cross and year; it does not name Kuchinotsu as the location.
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JA Saga (Saga Prefecture Agricultural Cooperative)
https://jasaga.or.jp/agriculture/nousanbutsu/dekopon (opens in a new tab)
JA Saga’s cultivar-history section says Shiranui was developed in 1972 in Nagasaki by crossing Kiyomi with Nakano No. 3 Ponkan at the then Ministry of Agriculture Fruit Tree Research Station’s Kuchinotsu Branch (lines 99–102). The page’s following sentence says it was registered, which conflicts with NARO’s official entry; this source is cited only for the cross, year, and site.
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Scipio · YouTube
https://www.youtube.com/watch?v=zJXNm4f28Ug (opens in a new tab)
Summary from transcript: English auto-generated captions cover 0:00–16:07. At 0:13 and 1:04–1:21, the narrator identifies the paired Jeju fruit as Hallabong, says a Korean farmer gave it to him, and says it is also called Dekopon or Shiranui. At 8:50–9:02 he says this fruit was unripe; at 9:27–10:06 he describes acidity and bitter/resinous notes. This is one narrator-tasted specimen, not a cultivar-wide flavor or ripeness claim. The shorter English auto-dub of this episode calls the sample fully ripe, conflicting with this longer account; the longer version is used for its maturity and taste claims. Ujukitsu in the same video is a separate Taiwan-market fruit.
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