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World of CitrusWorld of CitrusEureka Lemon
Citrus Genome Database
https://www.citrusgenomedb.org/Analysis/2172661 (opens in a new tab)
Genome resource reviewed against the CGD assembly record and existing variety identity. CGD identifies the sequenced material as Eureka. This is a cultivar-level match; the record does not establish that a particular accession or tree represented here was sequenced.
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NSW DPI Citrus Team · NSW Department of Primary Industries · December 2005
Primefact 22/173, first edition. Rootstock fact sheet: claims about Eureka fruit and trees apply to Eureka grafted on Benton, not to Benton fruit.
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IV Organic · YouTube · 2021-12-10
https://www.youtube.com/watch?v=9tSVFSzRulA (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:01–14:16. The presenter’s backyard-orchard comparison includes a named Eureka sample; no location, fruit weight, Brix, pH, rootstock cultivar, or controlled tasting protocol is given.
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Garden Love Homestead · YouTube · 2020-03-01
https://www.youtube.com/watch?v=3AVkGD-79fY (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:00–10:10. Named Eureka and Meyer container trees are compared, but different age, watering/care, placement, fruit size, and an unmeasured hand-juice method confound cultivar comparisons.
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IV Organic · YouTube · 2017-01-26
https://www.youtube.com/watch?v=5AbC02ij2gY (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:08–23:05. Los Angeles presenter’s Eureka tree/fruit observations use a pruned semi-dwarf tree and one cut sample; rootstock cultivar, sample maturity, and controlled comparisons are not established.
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Jonathan H. Crane · UF/IFAS Extension · 2010
https://ask.ifas.ufl.edu/publication/HS402 (opens in a new tab)
HS1153/HS402. Originally published December 2010; revised November 2016, reviewed December 2019; current PDF reviewed July 2023.
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Gardenia
https://www.gardenia.net/plant/citrus-limon-eureka (opens in a new tab)
Secondary gardening overview; identifies Eureka and reported synonyms including Garey's Eureka; describes medium-to-large bright yellow oblong fruit with a nipple-like end, juicy highly acidic flesh and few-to-no seeds, plus recurring/year-round production. No cited specimen, accession, measurement, tasting protocol or source-specific citations; growing traits and cultivar history are secondary claims.
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Richard · Growing Fruit · 2017-01-30
https://growingfruit.org/t/eureka-lemon/6018/6 (opens in a new tab)
Post 6, Richard: reports about 2 lb of fruit picked from his Eureka and estimates at least 50 lb of unripe fruit still on the tree. No weighing method, tree accession or rootstock is given; the remaining crop is an informal estimate, not a measured yield. No taste report.
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Slicko · Growing Fruit · 2017-01-31
https://growingfruit.org/t/eureka-lemon/6018/8 (opens in a new tab)
Post 8, Slicko: says he bought the Eureka about eight months earlier, kept it in a large pot, and it set a large crop. This is one grower's tree report; location, accession, rootstock and measured yield are unstated. No taste report.
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Givaudan Citrus Variety Collection at UCR
https://citrusvariety.ucr.edu/crc3005 (opens in a new tab)
UCR accession page for Frost nucellar Eureka (CRC 3005), quoting The Citrus Industry, Vol. 1 (1967). Its quoted history describes Eureka generally, not observations of CRC 3005: Italian-origin lemon fruit seed said to have been planted in Los Angeles in 1858; Andrew Boyle and C. R. Workman later acquired seedlings and selected promising trees; about 1877 Workman supplied Thomas A. Garey with budwood and Garey propagated and introduced the selection as Garey's Eureka. The account does not identify the seed-parent cultivar or pollen parent.
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Arizona Fruit Trees · YouTube · 2016-06-28
https://www.youtube.com/watch?v=ErGgk_tg1S4 (opens in a new tab)
Summary from transcript: English autogenerated captions, 0:02–4:07 of 4:09. One Arizona grower describes a Eureka tree planted four years earlier, long fruit holding, thick rind, high productivity, and an unusually large final lemon left hanging on the tree. The stated yield of 1,000 lemons is a forecast, not a measured result. Accession, rootstock and formal measurement methods are unstated.
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Garden Love Homestead · YouTube · 2026-02-09
https://www.youtube.com/watch?v=1wnhu8JdMPM (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:01–11:20 of 11:22. Diana of Garden Love Homestead tastes a lemon identified as Eureka, calls it “really sour,” and notes a lemon aroma (2:36–2:58). The tasting and tree context are grower-reported; container-grown and in-ground examples are distinguished, and sample maturity, accession, rootstock, and any rating scale are unstated. No Frost Eureka is identified.
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Ed Able Solutions · YouTube · 2025-11-07
https://www.youtube.com/watch?v=ExY-Fw3KwZA (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:00–6:25 of 6:28. Ed Able Solutions and Bianca from Frantz Nursery discuss nursery Eureka and Lisbon lemons. At 0:30, Eureka is described with thick peel, zest and juice; Tom compares its thorniness with Lisbon at 5:19. The sample traits and tasting statements at 2:03–2:41 cannot be assigned confidently because the video transitions to Lisbon at 2:42; keep them unattributed. No sample measurements or rootstock are provided.
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Wendy's Garden Journey · YouTube
https://www.youtube.com/watch?v=TSRzkaKOO5s (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:00–3:34 of 3:39. A grower compares unusually large Eureka fruit with more average-size fruit; the oversized example has thicker rind and flesh that looks dry yet yields juice, while the average-size specimen appears juicier and has thinner rind. Fruit size, maturity, rootstock and sampling method are unstated; do not treat the oversized example as typical.
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TheTreeFather · YouTube
https://www.youtube.com/watch?v=6mrZlp6geCI (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:00–4:53 of 4:55. The speakers describe one 6–7-year-old dwarf Eureka in San Diego with a heavy crop, large thick-skinned fruit, very sour taste, and faint lemonade aroma. They attribute its low, spreading branch form to heavy fruit loads when young and describe simultaneous new growth, buds, flowers and fruit. Rootstock and sample maturity are unstated; no measured fruit weight or yield is given.
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Citrus Australia / Auscitrus · Last revised July 2003
https://citrusaustralia.com.au/wp-content/uploads/Swingle.pdf (opens in a new tab)
Two-page Australian rootstock fact sheet, last revised July 2003. Its compatibility section lists Eureka lemon among the scions reported as incompatible with Swingle rootstock. This is a source-specific graft-combination statement, not a claim about Eureka lemon disease susceptibility or every possible scion/rootstock accession.
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IV Organic · YouTube
https://www.youtube.com/watch?v=KrObhsIwV4g (opens in a new tab)
Summary from transcript: Charles Malki, identified as a biologist and plant expert, cuts a Eureka lemon at 9:27–9:43 and describes it as nearly seedless in this instance, adding that he has sometimes found one to three seeds. This is a limited grower observation, not a standardized seed count. English auto-generated captions cover 0:00–17:09 of 17:17.
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José Luis Foguet · Estación Experimental Agroindustrial Obispo Colombres (EEAOC)
Presentation date not shown. PDF p. 11 (viewer index 10, label P10), compatibility table for lemon scions: Rich 16/6 (USA) is marked yes under Lisbon and Genoa and no under Eureka. No methods or sample size stated; retain as compatibility guidance for named scions, not Rich 16-6 fruit or measured hardiness.
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L. G. Weathers; E. C. Calavan; J. M. Wallace; D. W. Christiansen · California Agriculture: The Journal of UC Agriculture and Natural Resources · November 1955
Field observations of Eureka lemon tops on Troyer citrange; this record pertains to the overall reported disorder and does not assert its cause.
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admin · Chickenfish · 2015-05-31
https://chickenfish.cc/bio/lemons-lisbon-eureka/ (opens in a new tab)
The grower says both trees were about five years old and picked fruit on the same day in early winter. A photograph-based estimate puts the Eureka fruit at about 7.5 cm long and the Lisbon at about 15 cm. This is one paired home-garden account; harvest location and a measurement method are not supplied.
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Garden Love Homestead · YouTube
https://www.youtube.com/watch?v=WN0TZ2IkilM (opens in a new tab)
Summary from transcript: English auto-generated captions describe a newly planted/gifted Lisbon beside an established container-grown Eureka; the presenter compares an egg-like Lisbon fruit with rounder Eureka fruit. A cut comparison initially looked less juicy for Lisbon, but later wedges prompted differing impressions. Watering and establishment differ, so this is a confounded home-garden comparison, not a general cultivar trial.
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Anna Ioannidi · Wikifarmer · 2023-06-14
https://wikifarmer.com/library/en/article/the-most-popular-lemon-tree-varieties (opens in a new tab)
Secondary profile, section “EUREKA [C. limon ‘Eureka’ (Eureka lemon)]”. Describes general Eureka fruit, tree form, fruiting season and broad climate sensitivity; no accession, trial, sample size or measurement method is supplied. Its sour/tender taste wording and broad bitter-orange rootstock incompatibility claim are not being recorded as a scored taste or verified scion-specific trial.
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George W. Garcelon (Part I); B. M. Lelong (Part II) · Sacramento: A. J. Johnston, Superintendent of State Printing · 1891
https://archive.org/details/citrusfruits00cali (opens in a new tab)
Part I by G. W. Garcelon; Eureka lemon passage at printed p. 9 (PDF p. 11). Garcelon gives a first-person comparison with Lisbon, including his belief that Eureka was more tender; no temperature or controlled test is reported. Historical comparison, not a hardiness threshold.
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Prita Sari Dewi; Akira Wakana; Yuu Tanimoto; Yumiko Fujiwara; Kaori Sakai; Kohei Kajiwara · Journal of the Japanese Society for Horticultural Science 82(3):203–214 · 2013
https://www.jstage.jst.go.jp/article/jjshs1/82/3/82_203/_html/-char/en (opens in a new tab)
Primary cultivar-specific experimental evidence. Table 1 classifies embryo number and male fertility; embryo means were measured under a stereoscopic microscope in twenty seeds per cultivar, except Foster Pink and Marsh whose embryo count was not examined. Table 2 reports selected zygotic progeny from controlled crosses; it is not a percentage of all seeds that are zygotic. Material grown at Sasaguri Orchard, Kyushu University Farm, Fukuoka, Japan. Preserve the difference between parent fertility and male fertility segregating among offspring. DOI:10.2503/jjshs1.82.203. Source captured in docs/research/breeding-keywords-2026-10-10/dewi-2013.html.
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Miguel Garavello; José Cuenca; Steven Dreissig; Jörg Fuchs; Andreas Houben; Pablo Aleza · Frontiers in Plant Science · 2019-09-24
https://doi.org/10.3389/fpls.2019.01174 (opens in a new tab)
Primary study source. Table 1 lists IVIA-495 as a tetraploid Eureka lemon from the IVIA germplasm bank; a separate diploid Eureka Frost (IVIA-297) is also listed. The authors collected mature pollen from the listed genotypes and used flow cytometry to analyze pollen nuclear DNA content. This supports only the named IVIA-495 study material, not a general tetraploid classification for ordinary Eureka Lemon. DOI:10.3389/fpls.2019.01174.
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