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World of CitrusWorld of CitrusFukushu Kumquat
University of California, Riverside — Citrus Variety Collection
https://citrusvariety.ucr.edu/crc3475 (opens in a new tab)
Accessed
poncirusguy · Growing Fruit · 2023-01-12
https://growingfruit.org/t/flowering-fukushu/50479/1 (opens in a new tab)
Grower report: On Jan 12, 2023, poncirusguy says one Fukushu kumquat grafted on C35 is flowering again and includes three photos. Single-specimen report; no flowering interval or repeat rate is established.
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Objective_Rule6550 · Reddit, r/Citrus
https://www.reddit.com/r/Citrus/comments/1vh9txy/fukushu_kumquat_tips/ (opens in a new tab)
Grower report: The original poster in Houston, TX describes one potted Fukushu owned for seven months, approximately 1 ft at purchase and 2 ft at posting, with developing fruit nubs. Approximate single-tree observations; no harvest, taste assessment, or cultivar-wide growth rate is reported.
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Edge of Nowhere Farm · YouTube
https://www.youtube.com/watch?v=G1MpwXW1Wpk (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:00–8:45. On one under-two-year-old full-sun Arizona tree, the presenter tastes a few fruits and describes sweet rind with more tart flesh; samples vary in juice/pith. The presenter speculates age, maturity and watering may affect low juice. Yield estimate of two to three dozen is not measured. No catalog taste score.
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Tom McClendon · YouTube
https://www.youtube.com/watch?v=rkm7wjqB0Uk (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:01–1:16. A grower reports one in-ground Fukushu in a sheltered south-side nook since 2022; estimates 3–4 ft growth in the prior year, says fruit held until cold, and calls the tree a good bearer, vigorous and nearly thornless. The captioned “11°” is ambiguous and is not a hardiness threshold; location, rootstock and tasting are unstated.
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Ed Able Solutions · YouTube
https://www.youtube.com/watch?v=BdQuitrtEeo (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:03–7:48. At France Nursery, speakers contrast Fukushu with Nagami as rounder, with somewhat thicker rind and creamy/spongy pith; their taste comparison is qualitative, not measured. Ed describes his own estimated 15–18-year-old Fukushu in a 24-inch pot and says it can bear year-round once established; location and rootstock are unstated.
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The Mulberries · YouTube
https://www.youtube.com/watch?v=PUO9SEdTW9I (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:01–43:44. Three Fukushu fruits from greenhouse plants recovering from animal damage are reported at 36, 32 and 34 g (mean 34 g); a refractometer reading is 8 °Bx. The presenter cautions that the sample was not up to par. A linked companion scorecard matches these values and is the same test, not independent evidence. Original card ratings are preserved; sweetness and sourness are mapped to catalog categories at the owner’s direction.
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Steven Murray's Rare Fruit! · YouTube
https://www.youtube.com/watch?v=Uxy8_2KbjWw (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:00–3:14. Presenter distinguishes candy-sweet peel from tart interior, mainly eats the peel, and says he likes the squeezed juice. He describes early-season fruit and relative frost sensitivity without location or an actual frost test. The title's calamansi-cross claim is unsupported and is not used as parentage evidence.
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Ed Able Solutions · YouTube
https://www.youtube.com/watch?v=ndHEzen1ZbM (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:00–4:39. Speakers discuss eating peel and flesh together; one sample's flesh is called tart, and a small tasting contrasts fully ripe Fukushu as less acidic than Nagami, with maturity varying across samples. The opening chance-seedling and circa-1963 introduction claims are not substantiated by this video; do not treat them as cultivar history. Specimen/rootstock attribution is limited.
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Yard Crunch · YouTube · 2021-12-28
https://www.youtube.com/watch?v=-l-dVlW3gys (opens in a new tab)
Summary from transcript: English auto-captions, 0:00–1:43 of 1:47. The speaker describes their Fukushu as a good producer and one fruit as large, juicy, and both sweet and sour, with sweetness more prominent; they eat the peel with the fruit and note some seeds. The speaker says the selected fruit could hang longer, so maturity is uncertain. Location, rootstock, and tree age are unstated. Qualitative grower observations; no normalized taste score or cold-tolerance threshold.
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Gardening and Cooking Made Easy · YouTube · 2021-03-23
https://www.youtube.com/watch?v=0f4gAas1yjE (opens in a new tab)
Summary from transcript: English auto-captions, 0:04–16:37 of 16:44. In the Fukushu segment (10:03–10:22), the grower identifies a newly planted tree on the east side of their house and describes it as top-heavy, with broader, flatter leaves than another kumquat. Arizona is the only location context; rootstock and planting date are unstated. Fruit-size hearsay and predictions about future growth are excluded.
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fully ripe gardening · YouTube · 2019-11-22
https://www.youtube.com/watch?v=Ec7rr2m8eyk (opens in a new tab)
Summary from transcript: English auto-captions, 0:00–6:30 of 6:32. The speaker describes one tasted Fukushu fruit as juicy (2:50–2:55); maturity and tested-tree context are unclear. A separate newly acquired potted Fukushu had fruit not ready for comparison. Treat this as one personal tasting observation, not a stable cultivar-wide profile; no taste-intensity score or reliable seed count is recorded.
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Edge of Nowhere Farm · YouTube · 2019-01-08
https://www.youtube.com/watch?v=ksyNLe6LUc4 (opens in a new tab)
Summary from transcript: English auto-captions, 0:00–17:18 of 17:20. In the Fukushu segment, the speaker selects one fruit from an Arizona-grown container plant (harvest identified as 2018). The sample is described as intermediate in size between Centennial Variegated and Meiwa, with orange/mandarin-like flesh, one tiny seed, and a thick center membrane. The tasting is described as balanced tart and sweet, but this is a single sample and relative comparison; no normalized taste score is supported. No tree age or rootstock is stated.
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One Arizona Garden · YouTube · 2021-11-21
https://www.youtube.com/watch?v=BSNermbVqho (opens in a new tab)
Summary from transcript: English auto-captions, 0:25–2:26 of 2:31. The speaker introduces one Fukushu fruit at 1:27–1:29 after Limequat and Mandarinquat samples, notes it is slightly smaller than the preceding Limequat, and identifies a fairly large seed. The speaker says it tastes sweeter than the earlier samples; this is a relative comparison only, not an absolute taste score. Sample source, tree age, and rootstock are unstated. The speaker's speculation about parentage is excluded.
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BerryGuy · Growing Fruit forum · 2022-01-05
Forum post by BerryGuy, Jan. 5, 2022. The grower reports a second fruiting year with 50 fruits versus 24 the prior season on a plant then in a 3-gallon container. The largest individual fruit was 44 g that season versus a 31 g largest fruit the previous season; these are maximums, not average fruit weights. The author gives a positive personal opinion but no scored sweetness, sourness, or bitterness intensity. Rootstock, growing location, and fruit maturity criteria are unstated.
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Tom McClendon (Citrus Palms With Tom) · YouTube
https://www.youtube.com/watch?v=sLynIzGDO1w (opens in a new tab)
Summary from transcript: English auto-generated captions, 0:01–17:28. At 12:18–12:56 McClendon identifies his Fukushu kumquat, planted in 2022 and not protected. He says it went through the Christmas 2022 freeze and did well, setting enough fruit for his use; he notes that later summer blooms can set more fruit. No minimum temperature, exposure duration, rootstock, exact location, or measured yield is reported. The page showed “4 months ago” when accessed 2026-09-27; exact publication date is unverified.
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NoUsernameEn · Reddit, r/Citrus · 2022-09-05
Realtorbyday’s comment (line 48) says their family grows Fukushu, Meiwa and Nagami and names Fukushu as their flavor winner. This is a personal family comparison; the thread provides no specimen, location, maturity or calibrated taste measurement.
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Growing Fruit · 2023-07-13
https://growingfruit.org/t/meiwa-kumquat-tree/55576 (opens in a new tab)
Relevant separate grower comments: post 6 hobilus reports their Fukushu nearly continuously flowers and fruits; post 16 says it has been more prolific so far than their Meiwa. In contrast, post 15 Gkight says their Fukushu did not share the second bloom seen on their Marumi/Meiwa. These are separate specimen observations, not a consistent cultivar-wide pattern.
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Dennis Peck · The Oregonian/OregonLive · 2022-01-13
The article’s “ONE GREEN WORLD FAVORITES” block says descriptions are from OneGreenWorld.com. The Fukushu profile calls it the largest kumquat fruit they grow, describing oblong golden-orange fruit with a stubby neck, thick sweet skin and acidic flesh; it says fruit usually has few seeds and that the variety is said to be hardy to 25°F. No accession, sample, exposure event or method is specified; the catalog’s UCR CRC 3475 source is titled Changshou and is not equated here.
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