Loading variety overview…
World of CitrusWorld of CitrusUS-942 Citrandarin
Mulberry0126 · Tropical Fruit Forum · Cold Hardy Citrus · September 10th, 2026
https://www.tropicalfruitforum.com/index.php?topic=62061.msg588983#msg588983 (opens in a new tab)
First-hand forum account, paraphrased; not an independently verified trial.
Accessed
Tom_GA · Tropical Fruit Forum · Cold Hardy Citrus · September 11th, 2026
https://www.tropicalfruitforum.com/index.php?topic=62061.msg589069#msg589069 (opens in a new tab)
First-hand forum account, paraphrased; not an independently verified trial.
Accessed
kumin · Tropical Fruit Forum · Cold Hardy Citrus · August 9th, 2025
https://www.tropicalfruitforum.com/index.php?topic=30891.msg563945#msg563945 (opens in a new tab)
First-hand forum account, paraphrased; not an independently verified trial.
Accessed
bussone · Tropical Fruit Forum · Cold Hardy Citrus · March 7th, 2026
https://www.tropicalfruitforum.com/index.php?topic=30891.msg577420#msg577420 (opens in a new tab)
First-hand forum account, paraphrased; not an independently verified trial. Context and follow-up posts: https://www.tropicalfruitforum.com/index.php?topic=30891.msg574549#msg574549 https://www.tropicalfruitforum.com/index.php?topic=30891.msg575268#msg575268
Accessed
The Mulberries · YouTube · December 30, 2025
https://www.youtube.com/watch?v=XDvO6aB8ekM (opens in a new tab)
Summary from transcript: The reviewer introduces US-942 as a related citrandarin and says its fruit is acceptable as a peelable fruit. They also give an unsampled general endorsement that the plant grows excellently and is a useful citrus rootstock; no US-942 specimen, location, scion, measurement, or trial method is stated.
Accessed
West Coast Agroforestry
Profile quotes group guidance attributed to an Albrecht et al. Florida 2024–25 rootstock guide: named rootstocks including US-942 produced good yields and lower-than-average fruit drop under high HLB pressure. Secondary group guidance only; no individual measurement, scion, trial setup, or disease-resistance rating. No verified byline or publication date.
Accessed
The Mulberries · YouTube · 2025-01-24
https://www.youtube.com/watch?v=ptwl1aaYYUQ (opens in a new tab)
Summary from transcript: US-942 plants of varied age, including own-root and trifoliate-grafted material, showed little discoloration or wind/sun burn in the field (18:23–19:20).
Accessed
The Mulberries · YouTube · 2026-08-13
https://www.youtube.com/watch?v=AITsLwPGghM (opens in a new tab)
Summary from transcript: The grower finds US-942 cuttings easy to root and grow on their own roots; healthy plants from small cuttings were roughly 1–1.5 years old, with age uncertain (5:11–5:36; 9:00–9:28; 12:24–12:44).
Accessed
The Mulberries · The Mulberries · 2025-12-20
https://www.youtube.com/watch?v=iTe5XvCuDCY (opens in a new tab)
Near-full auto-generated transcript reviewed with the matching scorecard archive. This citation supports only the presenter’s stated, unscored comparisons; it does not identify a current tree, prove a pedigree, or establish measured hardiness.
Accessed
Tom McClendon · YouTube · 2026-05-03
https://www.youtube.com/watch?v=PKHh1ODKfhI (opens in a new tab)
Summary from transcript: English automatic captions reviewed 0:02–22:54 of 22:56. Greene County, Georgia exposed orchard context is distinguished from the presenter’s protected sites; raw timestamped capture is retained in the Thomasville citrangequat research archive.
Accessed
Kim D. Bowman and Greg McCollum · HortScience 50(11):1731–1734 · November 2015
https://doi.org/10.21273/HORTSCI.50.11.1731 (opens in a new tab)
Hamlin sweet-orange yield on rootstocks in two Florida trials; performance depended on site, disease and management. Values describe grafted scion trees, not rootstock fruit traits.
Accessed
Citrus Rootstocks
https://citrusrootstocks.org/rootstock-cultivars/ (opens in a new tab)
The index lists US-942 parentage as Citrus reticulata ‘Sunki’ × Poncirus trifoliata ‘Flying Dragon’ and its USDA release date as 2010. The table does not report selection, field performance, release contributors, or other historical events.
Accessed
The Mulberries
https://themulberries.org/wp-content/uploads/2026/01/US-942.png (opens in a new tab)
Individual scorecard image for US-942 Citrandarin. The printed preference ratings are sweetness 5/10, sourness 2/10 and bitterness 8.5/10; 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.
Accessed
Greg McCollum and Kim D. Bowman · HortScience 52(4):541–546 · 2017-04-01
https://doi.org/10.21273/HORTSCI11435-16 (opens in a new tab)
Peer-reviewed trial of Ray Ruby grapefruit scions on seven rootstocks in a commercial Indian River County, Florida orchard, with 2012–14 harvests. This record is cited only for the trial’s overall fruit-quality comparison for US-942 as a rootstock; it does not describe fruit borne by US-942 itself.
Accessed
TheMulberries · YouTube
https://www.youtube.com/watch?v=JW4qjGgdXoE (opens in a new tab)
Summary from transcript: English auto-captions, 0:01–44:48 of 44:50. The narrator identifies one received US-942 fruit, notes it may be slightly overripe (2:46–3:22), and reports 58 g (4:22–4:29), 11 °Bx (34:24–34:44) and electronic pH 2.8 (37:21–37:53). These readings and flavor descriptions match the same-channel US-942 scorecard; they likely refer to the same fruit and are not an independent sample. The narrator says the fruit was provided by Sweet Home Alabama Homestead (1:31–2:04); the connected nursery specimen is separate. Reported readings were not independently verified from the video image.
Accessed
ToughCitrus · YouTube
https://www.youtube.com/watch?v=4-hBZLuylLU (opens in a new tab)
Summary from transcript: English auto-captions, 0:00–16:27 of 16:31. At Madison Citrus Nursery, the narrator identifies a fruit on a US-942 tree (0:45–0:59), comments on a cut fruit’s few seeds (1:21–1:31) and describes it as very juicy (1:47–2:01). The video is a nursery visit, not a replicated fruit or cold-hardiness trial; its unmeasured cold-hardiness comments are not verified here.
Accessed
TheMulberries · YouTube
https://www.youtube.com/watch?v=BaaOpDu37Dw (opens in a new tab)
Summary from transcript: English auto-captions, 0:02–10:51 of 10:52. The narrator says Madison Citrus Nursery sent the fruit (1:39–1:46) and says it came from a US-942 tree (2:40–3:03), while acknowledging uncertainty about the exact mandarin parent. The fruit is shown with seeds removed (3:24–3:52), and the narrator describes peeling and flavor (4:02–7:11). The video says it is not a formal tasting; sensory ratings and structured taste fields are not inferred.
Accessed
TheMulberries · YouTube
https://www.youtube.com/watch?v=jXuCi4IuhWw (opens in a new tab)
Summary from transcript: English auto-captions, 0:01–15:57 of 15:59. The presenter describes rooting US-942 cuttings in a greenhouse that experienced temperatures in the 20s (4:36–4:51; unit not stated), and grafting US-942 onto trifoliate orange and Swingle (5:17–5:57). He describes poor drainage at his outdoor site and reports that plants grafted on trifoliate rootstock did well there (6:02–6:34). He says young field trees had experienced only one winter with temperatures down to 10° without observed damage (8:39–10:32); no unit, duration or representative sample is reported, so this is not a cultivar minimum.
Accessed
TD Homestead · YouTube
https://www.youtube.com/watch?v=d1jZkmG1tLA (opens in a new tab)
Summary from transcript: English auto-captions, 0:07–13:04 of 13:08. The speaker says the recording is Sunday, July 7, 2024 (0:07–0:12); this is not a verified upload date. He identifies a newly planted US-942 as the garden’s first in-ground citrus in North Carolina Zone 8A and describes it as about 3 feet tall with new growth since he received it from Madison Citrus Nursery (1:48–2:34). The video documents planting and initial condition, not later fruiting, overwintering or long-term performance.
Accessed
Kim Bowman; Thomas McCollum · USDA Agricultural Research Service
https://citrusrootstocks.org/wp-content/uploads/2020/03/US-942.pdf (opens in a new tab)
Official release notice. It states that US-942 was released to nurserymen and growers, names the Sunki mandarin × Flying Dragon trifoliate orange cross and Herb Barrett as its maker, and identifies the field-testing planners/conductors as Don Hutchison, Heinz Wutscher, Greg McCollum and Kim Bowman. It reports named Valencia, Hamlin and mandarin scion trials and nursery results; trial yields and fruit quality concern grafted scions, not US-942 fruit. Table 14 reports 78% strong seedlings, 100% true-to-type among strong seedlings and 78% usable seedlings, with no sample denominator stated. The signature date is unreadable; ARS metadata lists acceptance on 2010-09-22 but publication date N/A.
Accessed
Deived Uilian de Carvalho; Daniel A. Boakye; Tim Gast; Rui Pereira Leite Junior; Fernando Alferez · Frontiers in Plant Science 12:777078 · 2021-11-19
https://doi.org/10.3389/fpls.2021.777078 (opens in a new tab)
Primary study of rootstock seed-tree fruit and nursery performance. At Immokalee, researchers sampled grafted US-942 seed trees aged 8–10 years (27 trees) over 2018–2020. Fruit and seed measurements vary by harvest period; nursery tests report earlier seedling emergence for US-942 than US-802 or US-897. These are rootstock source-tree fruit and seedlings, not fruit borne by commercial scions grafted onto US-942. The article’s Fig. 8 correlations are study-specific and do not provide a direct fruit-level unit or sample count.
Accessed
Sue Kendall, ARS Office of Communications · USDA Agricultural Research Service
https://www.ars.usda.gov/oc/dof/ars-citrus-rootstocks-a-success-story/ (opens in a new tab)
USDA-ARS feature; the page shows a last-modified date of 2025-06-03, not an original publication date. Its photo caption describes a six-year-old Owari Satsuma scion on US-942 as the highest-yielding rootstock in “this trial,” averaging more than 300 lb/tree; trial site, years, replication and comparator list are not given. The article separately reports US-942 adoption in Florida during 2018–2020: about 1.8 million trees propagated, around 22% of all Florida propagations. Neither passage describes US-942 fruit as a scion or establishes universal yield superiority.
Accessed
Ernie Neff · Citrus Industry · 2021-11-03
https://citrusindustry.net/2021/11/03/rootstocks-us-812-us-942-hold-promise/ (opens in a new tab)
Secondary report of early, grower-run Valencia orange rootstock comparisons in the 2018–19 and 2019–20 seasons at Lake Placid, Babson Park and Felda. The article reports positive revenue differences for US-942 against local controls at the sites, while the relative advantage varied by location and season; the Felda differences decreased in 2019–20. It gives no numeric US-942 fruit-quality results or complete trial design, and does not establish a universal economic ranking.
Accessed
Alfredo Flores · Agricultural Research, USDA Agricultural Research Service, vol. 51 no. 12 · December 2003
https://agresearchmag.ars.usda.gov/2003/dec/citrus/ (opens in a new tab)
Historical USDA-ARS feature on US-942 before commercialization. It groups US-942 with US-897 and US-802 as strong candidates following initial tests and describes US-942 as expected to produce medium-sized sweet-orange trees. The article says all three candidates were still several years from commercialization. It gives no US-942-specific trial values or measured tree-size sample and does not establish the later release date.
Accessed
Ute Albrecht; Kim D. Bowman · Scientia Horticulturae 147:71–80 · 2012-11-12 (journal issue; ARS record lists 2012-09-28)
https://doi.org/10.1016/j.scienta.2012.08.036 (opens in a new tab)
Albrecht & Bowman, Scientia Horticulturae 147:71–80; DOI 10.1016/j.scienta.2012.08.036. Experiment 2 tested 16-month-old US-942 rootstock-genotype seedlings under controlled greenhouse graft-inoculation (July 2010; 27 inoculated and 9 mock plants). Keep separate from Experiment 3, which tested US-942 as a scion micrografted onto Volkamer lemon; neither design establishes a general field resistance guarantee.
Accessed
Kim D. Bowman; Lynn Faulkner; Mike Kesinger · HortScience 51(10):1208–1214 · 2016
https://journals.ashs.org/view/journals/hortsci/51/10/article-p1208.xml (opens in a new tab)
DOI: https://doi.org/10.21273/HORTSCI10970-16. Full-text copy used for review: https://ccpp.ucr.edu/onlineOrdersV2/assets/uploads/files/2016__K_D__Bowman%2C_L__Faulkner%2C_New_Citrus_Rootstocks_Released_by_USDA_2001-2010%2C_Field_Performance_and_Nursery_Characteristics.pdf.
Accessed