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World of CitrusWorld of CitrusOkitsu Wase Satsuma
University of California, Riverside — Citrus Variety Collection
https://citrusvariety.ucr.edu/crc3820 (opens in a new tab)
Accessed
M. Nishiura · Japanese Agricultural Research Quarterly · 1967
Primary paper, pp. 17–18. It identifies Okitsu No. 2 as Okitsu-Wase, registered in 1963, among three sister nucellar seedlings of Miyagawa-Wase selected in 1949 from a 1940 trifoliate-pollinated experiment. The paper treats it as a nucellar selection; pollen does not establish genetic parentage. Trial results report vigorous growth, early and uniform coloring, flatter fruit, high soluble solids, and the highest citric acid among the compared strains.
Accessed
GetUp&Grow · YouTube · 2022-12-27
https://www.youtube.com/watch?v=Dh2WyogHqhw (opens in a new tab)
Summary from transcript: First-hand protected-tree grower report. The speaker identifies a Zone 8A site and says the in-ground Okitsu Wase experienced 6°F weather while protected by blankets, jackets, pipe insulation, and incandescent lights. They report some defoliation but favorable recovery. No event date, exact location, rootstock, tree age, tree-level temperature, duration, or independent temperature measurement is supplied.
Accessed
Ed Able Solutions · YouTube · 2024-12-06
https://www.youtube.com/watch?v=GCLn5cnCHHY (opens in a new tab)
Summary from transcript: Nursery/container comparison. Presenters call Okitsu very early-ripening, show easy peeling, and compare its flavor with Dubashi as slightly different, with not as much sugar but “all the flavor.” The trees were potted in 2022 and discussed as 5-gallon nursery stock; rootstock, location, exact harvest date, and analytical measurements are absent.
Accessed
Marc Suderman #SoilMatters · YouTube · 2015-10-25
https://www.youtube.com/watch?v=tTE6qixqSLs (opens in a new tab)
Summary from transcript: Marc Suderman reports from an Okitsu Wase treatment block in Fresno County, California, on October 23, 2015 during harvest. It discusses foliar treatment and Brix management generally, but supplies no measured Brix, rootstock, sample count, or treatment-rate details reliable enough to normalize.
Accessed
Clark (clarkinks) · Growing Fruit · 2026-06-21
https://growingfruit.org/t/all-about-satsuma-mandarins/80886/3 (opens in a new tab)
Forum post reproducing a Plantly article dated January 18, 2023. The quoted Okitsu passage says it is close to Owari in growth, fruit size, harvest time, and seed count, and that “some reports indicate” it may be sweeter depending on environmental conditions. This is third-party hearsay, without an identified specimen, growing conditions, harvest, tasting protocol, or measurements.
Accessed
Unknown · Citrus Enthusiast · 2016-12-19
Distinct Okitsu Wase section, not the Kiyomi section: blog describes the cultivar's fruit as seedless and easy to peel, with smooth pale-yellow rind and juicy flesh, low acid/high sugar, and late-May ripening in New Zealand. The post also relays origin, history and tree claims without an identified specimen or measurement method; these are blog-reported claims, not primary proof.
Accessed
Jake Price; Mary Sutton; Joshua L. Dawson; Jacob Kalina · University of Georgia Cooperative Extension, Circular 1352 · 2025-08-29
UGA Circular 1352 compares 12 early-maturing satsumas with Owari across southern Georgia. Each cultivar was sampled at 1–5 sites; five fruit per variety and site were juiced at late September and mid-October in 2022 and 2023, with the same sites both years. Values are multi-year means. Rootstocks included Poncirus trifoliata, ‘Rubidoux,’ and trifoliate hybrids, but cultivar-specific assignments are not stated. TSS/Brix and titratable acidity are chemical measurements, not pH or sensory scores. The publication does not identify a matching CRC accession.
Accessed
Tracy L. Kahn · University of California Agriculture and Natural Resources, Topics in Subtropics, vol. 5, no. 1 · January–March 2007
https://ucanr.edu/sites/default/files/2014-01/179457.pdf (opens in a new tab)
The CCPP availability table on printed p. 4 lists this cultivar in its “Seedless Varieties” column. The table defines “seedless” as allowing only an occasional seed, regardless of planting location. This is a collection availability classification, not a counted sample, accession-specific trial, or observation of the catalog's plant.
Accessed
Saša Prđun; Maja Dražić; Dragan Bubalo · Journal of Central European Agriculture · 2023
https://jcea.agr.hr/en/issues/article/3868 (opens in a new tab)
The 2014–2016 Opuzen study reports Okitsu flower nectar, not fruit juice: Table 2 mean nectar quantity 23.41 μL per flower (N=720; SD 7.93; range 7.00–75.00), and Table 4 mean sugar concentration 20.35% (N=720; SD 5.83; range 5.50–43.30). Methods used insect-excluded flowers, calibrated capillary tubes and a refractometer. This study does not identify a CRC accession or clone.
Accessed
Marija Sigurnjak Bureš et al. · ACS Food Science & Technology · 2024-06-18
https://pubs.acs.org/doi/10.1021/acsfoodscitech.4c00107 (opens in a new tab)
The autumn 2022 Opuzen study included Okitsu among four named cultivars; 30 fruit per cultivar were collected from different trees, from 8–10-year-old trees grafted on Poncirus trifoliata. Table 6 reports total aroma concentration of 54.05 μg kg−1 for Okitsu, measured by HS-SPME-GC-MS. This is an analytical study-lot result, not a sensory finding or a test of a specified CRC accession.
Accessed
uncle molewacker · Houzz
https://www.houzz.com/discussions/5187722/which-mandarin (opens in a new tab)
In a comment shown as “8 years ago” (last modified “8 years ago”), the poster says: “But, can say that Okitsu Wase and Dobashi Beni taste very similar off my trees.” This is a firsthand, unscored comparison of those named fruits; no accessions, sample count, harvest date, tasting method, or tree location are given. Danville/East San Francisco Bay appears in the poster's profile, not as a documented sample site. The comment does not compare Miyagawa's taste.
Accessed