Yanbaru Forest Multifloral Honey (やんばるの森の百花蜜)
The Story
Every May, as the tsuyu moves into the Yanbaru, a tree called iju turns the ridge lines white. It flowers through the heaviest months of the year – dense clusters of camellia-like blooms, each four to five centimeters across, briefly fragrant, crowning the mountain forest in a display visible from the road below. Bees cannot wait for the rain to stop. They work the dry intervals between showers, flying out when the gaps open, returning before the next band arrives.
Iju (Schima wallichii, イジュ) is the village tree of Kunigami Village. It is one of the most common trees in the Yanbaru – a forest that became a UNESCO World Natural Heritage Site in 2021 alongside Iriomote Island, Amami-Oshima, and Tokunoshima. In Okinawa it stands at the center of the rainy season: the folk song Benoki Bushi says you wish to bloom as purely white as iju, and the ruddy kingfisher’s call arriving with the first rains is answered, a few weeks later, by the forest turning white.
KAMIDA BEE FARM in Kunigami Village labels their rainy season harvest as hyakkamitsu (百花蜜), naming iju as the primary source alongside gettou and sashigusa. The iju bloom defines the harvest window and the honey’s character – deep sweetness with a bright acidity – but gettou’s aromatic spice is part of the same rainy season.
The honey does not reach mainland Japan. It sells through local marketplaces, furusato nozei, and direct producer sites. It sells out.
Characteristics
A rainy season multifloral honey from the Yanbaru UNESCO World Natural Heritage forest, with iju – Kunigami Village’s designated tree – as the primary named source, with gettou contributing aromatic complexity. Collected during the narrow tsuyu window when bees work the few dry intervals between rain bands. Full-bodied, deeply sweet with characteristic acidity. Labeled as hyakka-mitsu (multifloral) by all documented producers. Not available through any mainland specialty retailer.
Click to Display — The Details: sensory profile, and its regional identity
Bee Species:
Western honeybee (Apis mellifera). All documented commercial production. Apis cerana japonica (nihon mitsubachi) is absent from Okinawa – its southern range limit is Amami-Oshima in Kagoshima Prefecture.
Color:
Light to medium amber (estimated from botanical contributors: iju white flowers, gettou pale yellow, sashigusa golden-tropical). No producer color documentation found; searched-absent.
Flavor Profile:
KAMIDA BEE FARM: deep sweetness with an acidity that accentuates it – described as the defining characteristic of the rainy season harvest. Full-bodied rather than delicate. The gettou contribution adds an aromatic warm spice note in the background. Distinct from the bitter-sweet character of the winter fukanoki harvest from the same forest.
Tasting Notes:
The entry is full and sweet. The acidity – not sharp but sustained – arrives mid-palate and balances the sweetness rather than cutting it. The gettou note is there: aromatic, slightly spiced, briefly warm in the finish. The overall impression is of subtropical density – more complex than the spring blend, less dramatically bitter than fukanoki. One beekeeper’s description: it needs a second spoonful before you understand it.
Cross-producer sensory verification is limited; the flavor description above rests primarily on KAMIDA BEE FARM documentation. Written accordingly.
Aroma:
Aromatic and complex; gettou’s ginger-cardamom character is present alongside the subtler floral sweetness of iju. Warmer and more herbaceous than spring citrus-blend honey from the same producers.
Forage Origin:
Primary: iju (Schima wallichii ssp. noronhae, イジュ, Theaceae). An evergreen tree of the Yanbaru subtropical forest; grows to 15m typically, occasionally larger in old growth. Pioneer species character means it is abundant in secondary and disturbed forest as well as old growth. Flowers from late April through early June, with peak bloom during the rainy season. White camellia-like flowers, 4-5cm diameter, mildly fragrant, in dense clusters at branch tips. Bees favor the flowers strongly during the bloom window.
Secondary: gettou (月桃 / サンニン, Alpinia zerumbet, Zingiberaceae). Blooms concurrently with iju during the rainy season. Strongly aromatic – ginger and cardamom register clearly in the honey. Used throughout Okinawa for food wrapping, insect repellent, herbal tea, and traditional medicine.
Background: sashigusa (タチアワユキセンダングサ, Bidens pilosa var. radiata, Asteraceae). Invasive tropical plant naturalized across the Ryukyu chain since the 1960s. Flowers year-round. Primary nectar source for Okinawa’s commercial multifloral honey production; fills the calendar between specialty blooms. Also possibly egonoki (エゴノキ, Styrax japonica) – confirmed present in spring blend production at KAMIDA BEE FARM; rainy season presence not specifically documented.
Pairings:
Mild aged cheese; butter on warm bread; plain yogurt; green tea; Okinawa soba (the ash from iju wood was historically used to make the lye water for soba noodles – a direct if unexpected pairing connection)
Origin Story
Iju has a material history in Okinawa and Amami that runs well before honey. The wood was used for sabani – the traditional dugout outrigger canoe of Okinawa’s coastal communities – and for architectural pillars in Amami’s raised-floor storage buildings. Carpenters in Amami noted its qualities plainly: good for interior use, seasons for over ten years before it stabilizes enough for storage pillars, unsuitable for exterior use because it rots on contact with rain. The sanshin players tried it for instrument necks – the heart of the wood has a smooth touch – and found it warped when played. The wood is honest about its limits.
The bark’s saponin content made it useful as a fish poison. Powdered and scattered in streams, it stupefied fish, which floated to the surface and could be collected by hand. The name itself reflects this use: in the Ryukyuan language, iyu means fish. The tree that catches fish. The practice is now illegal under Japanese fisheries law, but the connection between this tree and the water it grows beside is built into what it is called.
Iju’s ash has one more food use: the lye water required to make Okinawa soba noodles their distinctive texture was traditionally derived from iju wood ash. The tree that was a canoe, a poison, a medicine for skin disease, a pillar, an instrument neck that failed – it was also an ingredient in the noodle soup.
Commercial honey from iju appears in the recent Yanbaru beekeeping record – producer documentation dates to the early 2000s – but the tree’s relationship with Okinawan life is old. The folk song Benoki Bushi describes iju crowning the rainy season forest, white against heavy clouds, a symbol of the richest and wettest months of the year.
One ecological connection that has no honey consequence but belongs here: in late May in Amami-Oshima, large numbers of the asagi madara butterfly gather at iju flowers to nectar. The butterfly is conducting its northward spring migration – the same migration that will carry it from Okinawa to the mountains of Tohoku. It stops at iju. The honey bees making the rainy season honey and the migrating butterflies fueling their journey north are sharing the same flowers in the same brief weeks of bloom. That fact changes nothing about the honey. It is worth knowing.
Cultural Context
Iju honey has no national identity in Japan. It is not on the Japan Beekeeping Association’s primary nectar plant list. No mainland specialty retailer stocks it. No competition record has been found. It exists entirely within Okinawan local commerce – furusato nozei, small regional marketplaces, direct producer sales. From the mainland, it is invisible.
The tree itself has Ryukyuan cultural depth that the honey inherits by association. The Benoki Bushi folk song locates the height of the rainy season at the iju bloom: the ruddy kingfisher’s call signals the nagashi is coming; the forest turning white signals its peak. The song expresses the wish to be as purely white as an iju flower – an aspiration to something momentary and complete. The Okinawa agricultural calendar marks seasons by what blooms. Iju is the rainy season flower in the same way sakura is the mainland spring.
The tree’s designation as Kunigami Village’s village tree (村木) is institutional confirmation of this cultural role. The Ryukyu Government, before the 1972 reversion to Japan, issued an 8-cent iju postage stamp in its cultural stamp series – iju as a symbol of Ryukyuan identity. In the Yanbaru UNESCO World Natural Heritage context, beekeeping from iju is not incidental to the forest – it is one of the ways the forest is inhabited and known. The producers who document three or four distinct seasonal harvests from the same hives are practicing a kind of forest literacy that has no equivalent in mainland Japanese honey production.
A traditional Okinawan weather saying: “イジュヌ花、雨” – if iju flowers, rain is coming; the tsuyu has arrived. The tree is a seasonal calendar. The modern song “Iju nu Hana” (Tomori Toshiyuki, sung by Taira Yuki) puts it plainly: “The May rains fall / In the mountains of Yanbaru / A pure white flower blooms / The iju flower.” Ryuka, weather proverbs, postage stamps, folk song. The cultural record for iju is not thin.
The taxonomy is disputed and worth noting for any reader who wants to cite a scientific name. The Okinawan iju has been published under five different scientific names depending on the authority: Schima wallichii ssp. liukiuensis (Hatsushima 1971, widely used in older sources and by producers); S. wallichii ssp. noronhae (current Japanese botanical authority – 改訂新版日本の野生植物 vol. 4, 2017); S. superba var. kankaoensis (YList, Japan’s official plant name database, which links it to the Chinese Schima superba complex); S. noronhae as a full species (Tsukuba Botanical Garden); and simply S. wallichii with no subspecies (Satake et al. 1999). The 2017 authority is used on this page. The family (Theaceae, ツバキ科) and the Japanese name イジュ are stable across all authorities.
わぬも伊集やとて 真白咲かな
Wanu mu iju yatuti -- mashiro sakana
I too wish to be an iju -- to bloom so purely white
Harvest & Forage
Bloom window: late April through early June, with peak during the Okinawa tsuyu (rainy season). The tsuyu in Okinawa runs from early May to late June – earlier than the mainland and wetter. Bees work the dry intervals between rain bands. Production is structurally limited by the weather: a wet year with few dry windows reduces yield; a dry rainy season may produce more.
Gettou blooms concurrently with iju, adding its aromatic contribution to the same harvest window. The two plants are inseparable in the rainy season honey calendar. Sashigusa contributes background nectar throughout. Extraction follows the rainy season, approximately June to early July.
All documented producers use stationary beekeeping – fixed hives in or near the Yanbaru forest. No migratory beekeeping documented. Non-heated raw honey is the standard at all documented producers.
Beekeeping Context
Small-scale family operations in Kunigami Village and the surrounding Yanbaru area. Western honeybee (Apis mellifera) standard. Production volumes are small – most producers sell through furusato nozei, regional marketplaces, and direct farm sites. No mainland distribution.
KAMIDA BEE FARM (Kunigami Village) is the most thoroughly documented operation for iju honey, operating four distinct seasonal harvests: spring (sakura, egonoki, citrus), rainy season (iju and gettou primary), year-round (sashigusa), and winter (fukanoki). The explicit documentation of multiple seasonal harvests from the same hives is characteristic of Yanbaru beekeeping – the year-round subtropical nectar calendar means harvest is organized by season, not by year.
Iju is not threatened as a species. Its pioneer character means it regenerates readily in disturbed forest and is abundant throughout the Yanbaru. Unlike fukanoki, which depends on narrow typhoon-free windows for production, iju production risk comes from excess rain during the bloom rather than from storm damage to the plant itself.
Named Producers
- KAMIDA BEE FARM – Kunigami Village, north Yanbaru (kamihoneybee.base.shop). Rainy season honey: iju primary, gettou and sashigusa secondary. Labeled hyakka-mitsu (multifloral). Character: deep sweetness with acidity. Non-heated raw honey. Four distinct seasonal products.
- Hachimichan – Nago City, Yanbaru area. Three distinct products: sashigusa, iju, and fukanoki. Confirms iju as a separately recognized seasonal type in the Nago/Yanbaru market.
Source Regions
- Kunigami Village – primary documented production zone; KAMIDA BEE FARM
- Nago City – secondary Yanbaru production zone; Hachimichan
- Iju range extends throughout Ryukyu chain south to Yonaguni Island and north to Amami-Oshima (Kagoshima Prefecture)
- No commercial iju honey production documented outside Japan despite the species’ wide SE Asian and Himalayan range
Translations
- やんばるの森の百花蜜 – Yanbaru forest multifloral honey; the actual product label
- Rainy season honey (梅雨蜜 / 初夏蜜) – the seasonal label used by some producers
- Iju honey (イジュ蜂蜜) – informal descriptor naming the primary nectar source