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World of CitrusWorld of CitrusOP Nagami Kumquat
The Mulberries · YouTube
https://www.youtube.com/watch?v=PcaKsMaXTxE (opens in a new tab)
Reviewed from the existing local archive; no fresh page access in this pass. Summary from transcript: English auto-generated captions reviewed 0:01–26:47 of a 26:48 video. At 1:02–1:30, the presenter identifies the tiny fruit as an open-pollinated Nagami seedling associated with Dr. Brown’s collection; the description says Virginia Fruit Grower supplied the samples. It does not name a pollen parent or establish equivalence to US-1515, Nordmann Seedless, or standard Nagami. The OP Nagami sample is reported as 2.5 g, seedless, very juicy for its size, tightly attached/unpeelable, and 15 °Bx from a refractometer; pH was not measured. The companion scorecard reports the same 2.5 g and 15 °Bx and is one tasting event, not a separate sample. No exact publication date, tree/rootstock, harvest date, or sample origin was verified.
Accessed
The Mulberries
https://themulberries.org/wp-content/uploads/2026/01/OP-Nagami.png (opens in a new tab)
Reviewed from the existing local archive; no fresh page access in this pass. The publisher’s OP Nagami Kumquat scorecard reports one very small 2.5 g fruit, seedless and unpeelable, very juicy with high-quality zest, 15 °Bx and unknown pH; its printed ratings and descriptors are reproduced in the archived scorecard transcription. The matching 2.5 g and 15 °Bx video report in the same review folder identifies this as the companion card for one OP Nagami tasting, not an independent fruit sample. The card does not identify a pollen parent or establish equivalence to US-1515.
Accessed
eyecrk (as attributed in the user-supplied excerpt) · Citrus Growers v2 forum
https://citrusgrowersv2.proboards.com/thread/24/cold-hardy-post-nagami-back (opens in a new tab)
The original ProBoards page was not recovered. This citation represents a user-supplied excerpt attributed to eyecrk and dated July 1, 2019, in Virginia Beach; the post title, author profile, date, and surrounding context have not been independently verified. The excerpt says the writer received an OP Nagami start from a citrus mentor about ten years earlier, lost their original plant during the 2013–14 freeze, reports the mentor’s tree appeared to recover but did not, and says a long-dormant approach graft later grew vigorously in spring 2019. It gives no exact temperature, duration, protection, rootstock, or measured survival threshold, and does not establish equivalence with US-1515.
Accessed
Growing Fruit · 2025-03-23
Page 31 contains posts #606–609. Fishsauce’s #608 (March 23, 2025) relays a private reply attributed to the Virginia Fruit Grower about OP Nagami propagation lineage through a local mentor, Oregon Exotics and Dr. Brown, and relays his intention to propagate it. This is secondhand provenance, not an accession record; it does not identify Dr. Brown’s selection, establish equivalence with US-1515, or provide a measured cold exposure.
Accessed
Virginia Fruit Grower · YouTube
https://www.youtube.com/watch?v=ubkfYb9pleI (opens in a new tab)
Summary from transcript: 1:00 video; English auto-generated captions cover 0:01–0:57; no exact publication date verified. The presenter calls this plant an open-pollinated Nagami and says it was the only one of his grafted kumquats to survive temperatures around 3°F (0:01–0:35). Exposure duration and other conditions are not stated, so this is one grower’s observation, not a general minimum. He says the tree is not a heavy bearer but its fruit are delicious and basically seedless; the tree is grafted on Flying Dragon and grows slowly (0:35–0:57). No taste score or measured fruit values are reported.
Accessed
🍋Virginia Fruit Grower🌱 · YouTube · 2026-02-01
https://www.youtube.com/watch?v=MpxESUtUtOc (opens in a new tab)
Summary from transcript: English native YouTube transcript reviewed 0:02–4:42 of this 4:47 video; the English caption-track designation is unspecified. At 3:01 the presenter says OP Nagami is looking okay; at 3:24 he says it is pretty much the only thing looking okay over here. This is his visual opinion of one plant during a local walk-around after a site-wide freeze and snow. The transcript gives no tree-specific minimum, exposure duration, age, rootstock, or controlled cold-response result. The page describes several days below freezing and snow, and the presenter mentions site temperatures around 19°F and mid/upper teens; these are general site conditions, not measured exposure at this tree.
Accessed