This kō's name is one of the more tangled naming puzzles in the whole calendar. It's written with 菖蒲, the same characters normally read shōbu and referring to the sweet-flag plant used in the tango no sekku iris bath back in #19 — but it's deliberately read あやめ here, and the flower it actually means is neither of those. It's 花菖蒲 (hanashōbu, Iris ensata), a third iris relative distinct from both #19's ayame (Iris sanguinea) and the unrelated shōbu bath plant, sharing a name with each of them for entirely different reasons.
Hanashōbu became a genuine horticultural obsession in the Edo period, when growers around Horikiri, on the edge of what's now Tokyo, bred it into hundreds of cultivars and opened dedicated iris gardens that drew visitors specifically to see them — much the way cherry blossoms drew crowds a season earlier, but for a flower prized for careful cultivation rather than a fleeting wild bloom.
Moving into its peak season, prized enough that it's traditionally simmered slowly rather than rushed, since overcooking turns the texture rubbery almost immediately.
Domestic Japanese blueberries start reaching markets now, a few weeks ahead of the imported fruit sold the rest of the year.
Confusingly named for a vegetable that's actually harvested in summer — it simply keeps well enough, thanks to its thick skin, to still be eaten through winter.
Coming into its proper season, best boiled in well-salted water and eaten straight from the pod while still warm.
Hanashōbu's petals sit in three tiers — an outer set that droops downward, a middle set that stands upright, and a small inner set easy to miss entirely — a structure Edo-period breeders exploited to create wildly different silhouettes from what is, underneath the variation, the same basic three-part iris plan.
Held on June 30th at shrines across the country, this ritual has roots documented as far back as the Engishiki, a legal and ceremonial code compiled in 927 — over a thousand years of continuous practice. Worshippers pass through a large ring woven from chigaya reed grass (茅の輪, chinowa), tracing a figure-eight path through it, in a custom traditionally linked to a myth about the god Susanoo teaching a struggling family to weave such a ring to ward off illness. It marks the exact midpoint of the year: a formal clearing of the first half's accumulated misfortune before the second half begins.
That 菖蒲 can mean three different plants — the bath herb, the Iris sanguinea of #19, and the Iris ensata meant here — depending entirely on context is less a flaw in the language than a record of how loosely "sword-leaved plant by the water" got applied across centuries, before botanical classification existed to force the distinctions modern readers now have to reconstruct after the fact.
Seeing dozens of hanashōbu varieties side by side makes Edo-period breeders' range of achievement far more obvious than any single plant can show on its own.
Most participating shrines post the correct direction and number of passes for the ritual at the ring itself — worth reading before starting rather than guessing.
Unlike hardier cut flowers, iris blooms typically last only a few days once cut — better bought in smaller amounts more often than one large arrangement meant to last the week.
Even without attending a formal harae, the exact midpoint of the calendar year is a reasonable, already-marked moment to review what the first half actually held.
The same two characters can be read shōbu or ayame depending on which flower, custom, or plant family the reader has in mind — one written form doing service for at least three different things that only vaguely resemble each other. Nagoshi no harae, arriving in this same kō's window, offers a cleaner kind of reset: not a name carrying too many meanings, but a chance to just set the first half of the year down and start the second half without dragging every misstep of the last six months into it. What would you actually let yourself walk away from at exactly the year's midpoint, if a ring of reed grass were all it took?