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World of CitrusWorld of CitrusTen Degree Tangerine
Tough Citrus · YouTube · 2023-12-20
https://www.youtube.com/watch?v=Qy2VfM4OACw (opens in a new tab)
Summary from transcript: Tough Citrus tastes a Ten Degree Tangerine that is ripe in November, describing a sweet-tart, lemonade-like flavor with more acidity than a typical sweet mandarin. The fruit has yellow skin with some green areas, orange flesh, a fragrant mandarin-and-lemon rind, and soft, very juicy flesh. Its loose peel comes away easily, and the presenter reports roughly one or two seeds per segment. He favors it for backyard growing and suspects its softness would make shipping difficult. He discusses the Clem-Yuzu selections, identifies Stan McKenzie as the supplier, relays a report of survival at 8°F, and suggests growing it in Zone 8 areas such as the Carolinas.
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C. T. Kennedy; from the notes of John R. Brown, M.D. · Fruit Gardener
https://www.scribd.com/document/138542257/Hardy-Citrus-of-Texas-Part-2 (opens in a new tab)
Original historical report hosted on Scribd. The ClemYuzu account is relevant to the overview.
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The Mulberries · YouTube · 2024-11-20
https://www.youtube.com/watch?v=pGU3FmlXWo8 (opens in a new tab)
Summary from transcript: The Mulberries compares Ten Degree Tangerine with Owari Satsuma, examining the peel, flesh, seeds, aroma, and taste. The Ten Degree sample weighs 110 g and measures 10.5 °Brix; its pH is estimated at 3.1 using a color comparison. It has yellow peel, light-orange flesh, very easy zipper peeling, moderate seediness, and fairly juicy flesh that drips less than Satsuma. The flavor is moderately sweet and sour, with mandarin and lemon notes and no detected flesh bitterness. The rind combines mandarin, yuzu, lemon, and floral aromas; the zest has a slight bitter edge. The presenter enjoys it fresh, discusses kitchen uses, compares tree shape and productivity, and relays cold-hardiness claims and possible growing conditions.
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Walter T. Swingle, T. Ralph Robinson, and E. M. Savage · United States Department of Agriculture · August 1931
Printed pages 8–9, “Clement tangelo” (PDF pages 22 and 25). Page 9 records the introduction of Clementine to the United States in 1909 through budwood sent by L. Trabut in Algeria, and notes plantings in southern Texas. This provides historical context for the inferred Algerian Clementine parent; it does not identify the particular tree or clone used in Brown’s later cross.
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The Mulberries · YouTube
https://www.youtube.com/watch?v=Wk-Isi3B-mg (opens in a new tab)
Summary from transcript: The Mulberries tours Ichang papeda, Yuzu and related hybrids in Central North Carolina, Zone 8a. The grower compares vigor, foliage, winter damage and recovery, and discusses selecting seedlings for hardiness and fruit potential. Yuzu produces off-types across seed batches; Ten Degree Tangerine produces a small proportion of visibly different seedlings, including presumed trifoliate hybrids; Ichang Lemon also produces zygotic seedlings at a low, unquantified rate. Recent Yuzu × trifoliate and Ichang Lemon × Thomasville pollinations have set fruit, with hybrid offspring still anticipated. Reported seedling variation is based on grower observations rather than genetic testing.
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Mckenzie Farms & Nursery · YouTube · 2023-12-18
https://www.youtube.com/watch?v=xwpB-lhbNRM (opens in a new tab)
Native transcript retained extract, 1:14–1:45. The presenter calls Ten Degree Tangerine “Clem Yuzu 2-2,” says “Clementine × Yuzu,” describes easy peeling and a lemonade-like taste, and reports a specific tree survived 8°F in 2018 but took damage. These are speaker/nursery assertions. No new parentage record is implied; the clip gives no rootstock, exposure duration, protection, or measured tasting data.
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The Mulberries · YouTube · 2026-03-02
https://www.youtube.com/watch?v=qkMk7xPCGeU (opens in a new tab)
Summary from transcript: Ten Degree Tangerine survived but vigorous top growth was burnt/pitted, and an earlier tree required replacement after heavy damage (36:00–37:24).
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Seattle Figs · YouTube · 2020-02-02
https://www.youtube.com/watch?v=_HJECOT8N60 (opens in a new tab)
Summary from transcript: Algerian fruit from a mature flood-irrigated Arizona tree peels one-handed at 1:41–2:19. This citation is a visual reference for an editorial comparison with Ten Degree Tangerine; the video does not discuss Ten Degree or establish parentage. The uploader description mentions puffing after maturity, but caption timing is ambiguous and no puffing-timing claim is imported.
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theMulberries · Growing Fruit forum · 2026-08-23
Relevant contributor: theMulberries, post 13 (August 23, 2026). The post gives a qualitative fruit description but does not identify a specimen, harvest, location, rootstock, or sample count; it is not an independent or measured tasting trial. Post 6 discusses propagation for the collection generally and does not identify Ten Degree's propagation or rootstock.
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1993
https://www.scribd.com/document/138692964/Ichang-Papeda-Hybrids (opens in a new tab)
1993 handout uploaded to Scribd by eyeckr; original author and publisher are not stated. Printed page 50 contains the handout's qualitative fruit description of ClemYuzu 2-2.
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J. Stewart Nagle · Fruit Gardener · December 1993
https://www.scribd.com/doc/138564018/New-Noteworthy-Citrus-From-Texas (opens in a new tab)
Printed pp. 29–30. Nagle’s article labels Clem-Yuz 3-3 “Ten-Degree Tangerine” and names Altex Nursery and Edible Landscaping as distributors under that name. This documents historical use for 3-3; it does not establish a transfer of the name to 2-2 or identify later stock.
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eyeckr · Citrus Growers Forum · 2007-02-04
http://citrusgrowersstatic.chez.com/web/viewtopic39fe.php (opens in a new tab)
Page 1, post by eyeckr. He labels his fruiting Ten Degree as “Clem yuz 3-3” and separately identifies his Clem yuz 2-2, which had not yet fruited. This establishes his contemporaneous labels, not a propagation link or 2-2 fruit description; the linked photo could not be retrieved.
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maesy (thread starter) · Tropical Fruit Forum · 2018-04-18
https://www.tropicalfruitforum.com/index.php?topic=27864.0 (opens in a new tab)
One-page thread, replies #1–17. In reply #10 (May 26, 2018), eyeckr compares plants he labels 3-3 and 2-2: 3-3 was very juicy with a more tightly adhered rind and a kerosene/skunky flavor he disliked; he says he grafted over it years earlier. His 2-2 ripened earlier and tasted better to him once fully ripe. Reply #12 also calls 3-3 Ten Degree and says it ripens late. The thread gives no acquisition source or propagation chain for either plant; the fruit comparison is not a matched ripe-fruit trial.
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Alan · Hardy Citrus · 2014-02-01
https://hardycitrus.blogspot.com/2014/02/ten-degree-tangerine.html (opens in a new tab)
The author writes that the name was “Originally thought to refer to Clem-Yuz 3-3,” but that “there is confusion and it may also refer to Clem-Yuz 2-2.” The page separately labels 2-2 and 3-3 observations in later dated fruit updates. These small, nonpaired samples do not establish a propagation link or a formal name transfer.
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These details still need evidence or clarification. A citation may support only part of a record.
McKenzie Farms & Nursery’s 2023 tour labels its tree “10° Tangerine Clem Yuzu 22” (read in this catalog as ClemYuz 2-2) and reports survival at 8°F in 2018 with damage. Nagle’s 1993 article and the Ichang handout had already identified ClemYuz 3-3 as Ten-Degree Tangerine; the 2014 Hardy Citrus post records confusion over whether the name also refers to 2-2. The date and path by which the name came to be used for 2-2 remain unknown.
The updated event is supported as a record of modern 2-2 label use, historical published use for ClemYuz 3-3 by 1993, and the naming ambiguity documented in 2014. The preserved Tough Citrus history-source note still records the earlier owner-confirmed claim that Stan McKenzie named the fruit after a 10°F freeze. The exposed catalog tools do not provide an operation to revise that source-note row; the old note is therefore retained but needs review against the earlier Nagle and Ichang publications. The current event and revised credit no longer claim first coining or a documented name-transfer path.