Where the road to Hāna begins
Hāiku sits on the north shore of Maui, at the top of the long and winding road to Hāna, in the wet green country above the coast. It is the same windward run that produced Maui Wowie further east at Lower Nāhiku, and it has the same ingredients: rain off the trades, deep soil, and enough distance from town that a garden could sit undisturbed.
It is also where the water gets serious. Peʻahi, the break the world calls Jaws, is off Hāiku, and the town has long held a particular concentration of two populations who overlap more than outsiders expect: big-wave surfers and very good growers. Blue Hawaiian came up in that company.
Lost landrace, or early Blueberry cross?
This is the honest heart of the page. Local farmers on Maui consider Blue Hawaiian a Hawaiian heirloom, and the debate over what she actually is has never been resolved. Two accounts compete, and neither has produced the evidence that would end the argument.
The nameable theory. That she is one of the earlier crosses made by pairing DJ Short's Blueberry, the legendary and much-copied masterpiece, with a local Hāiku Hawaiian sativa. It has the advantage of being specific: named parents, a plausible window, and a blueberry character that would have come from somewhere.
Never disproven. That she predates the cross entirely and is an island line in her own right, one of the ones that slipped out of the record during the eradication years. Harder to argue, because a lost landrace leaves no paperwork, but equally hard to rule out for the same reason.
We lean toward the cross, for one reason only: it is the account that can be checked. A named breeder and a named parent can in principle be traced or refuted. "Lost landrace" cannot be tested at all, and a claim that cannot fail is not evidence, it is just a possibility. That is a preference about method, not a verdict about the plant.
Why she sits with the hybrids, for now
On this site a landrace grew up in place over generations without human direction, an heirloom is a landrace carried in from elsewhere and grown out here for fifty to a hundred years, and a hybrid is a plant where somebody chose both parents.
Blue Hawaiian is filed with the hybrids because the leading account puts her there. That placement is provisional and openly so. If the landrace account is ever supported by something firmer than recollection, she moves, and we will say why. We would rather have her in the wrong box with the reasoning visible than in the right box by luck.
Worth noting that the local reading is not wrong so much as differently framed. When Maui farmers call her an heirloom they mean she has been here a long time and people kept her, which is true under any of these theories. The botanical categories are narrower than the everyday word.
What we can and cannot say
What is not in dispute: she comes out of Hāiku, she is abundant and bush-formed, she carries the blueberry character her name advertises, and north-shore growers have kept her in circulation long enough for a second generation to think of her as local.
What is in dispute is everything upstream of that. We have no breeder's record of the cross, no parentage on paper, and no genomic work of the kind that settled the question for Hawaiian Duckfoot. Sequencing would likely resolve this quickly, since a recent Blueberry cross and a two-century island line look nothing alike in the data.
One thing worth putting on the record, in fairness to the landrace account: Pua Mana ʻOhana carry her, and they carry her in a catalogue of Hawaiian landrace and heirloom genetics. The island's most serious preservation bank treats her as heritage stock rather than as a modern cross. That is a data point and we will not pretend it is more: a seed bank sorts by where a plant belongs in a collection, not by chain of custody, and nobody is claiming the listing is a lineage document. But it is not nothing, and it cuts against the tidier story.
Until somebody does that work, this page stays as it is: both accounts, the reasoning for the provisional call, and no pretending.