Kawane Tea: Shizuoka's Mountain Sencha Region

By Christian Mauerer, founder of One with Tea.

Kawane tea is sencha grown in the Kawane area of the middle and upper reaches of the Oi River, in central Shizuoka Prefecture (Shizuoka Prefecture). The gardens sit on both banks of the river, upstream of the town of Shimada (Japanese Tea Sommelier). Most of them fall inside Kawanehon-cho, in Haibara District, where the regional cooperative keeps its office (Shizuoka Prefecture).

Here's what pulled me in. In 1964 this region took the first Emperor's Cup ever awarded in the Japanese tea industry (Kawane Tea Portal, history). Not Uji, not the Shizuoka lowlands. A mountain town of 5,341 people, roughly 90 percent of it forest, got there first (Kawanehon-cho; Kawane Tea Portal, about the town).

Key Takeaways

• Kawane tea is mountain sencha from the middle and upper Oi River, grown on both banks upstream of Shimada, mostly inside Kawanehon-cho in Haibara District, Shizuoka (Shizuoka Prefecture; Japanese Tea Sommelier).
• Tea already appears in the Keicho 4 land survey register of 1599, and in 1641 Kawane tea was presented as nengu, tax in kind, to Tokugawa Iemitsu, roughly 400 years ago (Shizuoka Prefecture; CHANOYU).
• Kawanehon-cho averages 2,988.3 mm of rain a year against Japan's 1,717.5 mm, on Japan Meteorological Agency data for 1981 to 2010 (Kawane Tea Portal).
• Kawane took what local records call the first Emperor's Cup in the Japanese tea industry, in 1964, and its growers have since taken the National Tea Competition's ordinary sencha top prize 15 times and the producing-region award 14 times (Kawane Tea Portal, history; Kawane Tea Portal).
• The 2007 Kawane-cha trademark is a three-part rule: leaf plucked in Kawanehon-cho or Kawane-cho, 100 percent of the aracha processed at a factory inside those towns, and anything short of 100 percent sold as "Kawane-cha blend" (CHANOYU).

Where is Kawane, and why does tea grow there?

Kawane sits in the mountains of central Shizuoka, on both sides of the Oi River, upstream from Shimada (Japanese Tea Sommelier). Most of the region falls inside Kawanehon-cho: 496.72 km², the third largest municipality in Shizuoka, about 90 percent forest (Kawane Tea Portal, about the town). The town counted 5,341 residents in 2,569 households on 1 September 2026 (Kawanehon-cho). The regional tea portal still prints about 7,300, roughly a third above the town's own current count, so I have used the town's.

The ground is steeper than those numbers let on. Mountain land makes up 97 percent of the town, the elevation range runs to more than 2,400 m, and the highest point is Mt. Tekari at 2,592 m (Kawanehon-cho). If you've read our overview of the Shizuoka tea region, this is the far mountain end of it.

The weather does the rest. The South Alps, with peaks in the 3,000 m class, catch warm air off the Pacific. The valley gets rain and daytime warmth, then damp cold air at night (Kawane Tea Portal; Chameikan). That swing plus the humidity makes mountain mist, and the Oi River's own river mist covers the leaf (Chameikan). Ringed by mountains, the valley gets short daylight hours and a wide day-to-night temperature gap, which holds bitterness down and builds umami (Shizuoka Prefecture).

That much water would drown a flat field. Almost all the gardens sit on mountain slopes instead, so it drains away rather than pooling, which is what the tea plant wants (Kawane Tea Portal). Most production sits below the peaks along the river, though some areas are higher, such as Tsuchiya at 600 m (Japanese Tea Sommelier). Mountain tea in this prefecture tends to work the same way, and our profile of Houkouen's Jiro mountain tea shows another version of it.

Four centuries of Kawane tea, from a 1599 register to Edo

The paper trail starts in Keicho 4, 1599, when tea already shows up in the land survey register for the area (Shizuoka Prefecture). Gardens existed by then, and in 1641 Kawane tea was presented as nengu to Tokugawa Iemitsu, which is where the roughly 400 years comes from (CHANOYU).

The tax detail is the part I find most telling. Old records show Kawane villages paying their nengu in tea, and production organised enough to settle a tax bill points to origins at least back to the Muromachi period (Kawane Tea Portal, history). Nobody pays rent in a crop they just planted.

About a hundred years after the Edo shogunate opened, the merchant Kinokuniya Bunzaemon was trading timber along the Oi River and carrying Kawane tea back to Edo with him. That's where the name spread (Kawane Tea Portal, history).

The processing arrived later. Uji's hand-rolled sencha method came to the region in 1837, at the village of Ikumi in Shimada, and that arrival is credited with the local tea earning its letters of honour (Japanese Tea Sommelier).

Then Meiji, and the export boom. Kawane tea was entered in a world's fair in Chicago and took a finest-sencha prize, quality-control associations and grower cooperatives were formed, and the leaf started moving abroad (Kawane Tea Portal, history).

Kawane momikiri-ryu: don't over-steam, don't over-roll

In the early Taisho era, the local tea master Nakamura Koshiro set down a style called 川根揉みきり流, Kawane momikiri-ryu. It counts as one of the eight hand-rolling schools of Shizuoka Prefecture (CHANOYU).

The rule is three negatives (Kawane Tea Portal):

1. Do not over-steam.
2. Do not over-heat.
3. Do not over-roll.

Leaf that grows in this much mist comes in high in water and soft, so a heavy hand flattens it.

That's also why the traditional method here is asamushi, light steaming (CHANOYU). Light steaming keeps the shape, and Shizuoka Prefecture describes Kawane leaf as needle-thin with a calm sheen, brewed at low temperature (Shizuoka Prefecture). In the cup it runs golden, light in aroma with a long finish and gentle astringency (CHANOYU).

Here's the detail I didn't expect. When Japanese manufacturers developed computer-controlled tea machinery, they used Kawane's processing as one of their models (Kawane Tea Portal). A hand style from a village of five thousand ended up inside the machines.

Four Meiji-era masters get named as the people who built what Nakamura later formalised: Sakamoto Tokichi, Muramatsu Kazo, Nakamura Togoro and Morota Shinzaemon (CHANOYU).

The work hasn't stopped. The current regional keyword is 川根みる芽伝統蒸し, Kawane miru-me dentou mushi, young bud and traditional steaming (Kawane Tea Portal news). The town's own Agriculture and Forestry Centre has run cultivar, cultivation and equipment trials for over half a century (Kawane Tea Portal).

How much Kawane tea is actually there?

Not much, and the honest figures are older than I would like. A Shizuoka Prefecture survey in 2009 put Kawane at about 590 hectares under cultivation, about 614 tonnes of aracha and about 800 million yen of output. Those figures are cited to the prefecture's tea white paper of March 2015 (CHANOYU).

For scale, Shizuoka's whole-prefecture output was about 33,400 tonnes in 2010 (CHANOYU). Those two numbers come from different years, so the comparison below shows scale, not a precise share. I would rather say that out loud than round it into a tidy percentage and hope nobody checks. Our breakdown of Japanese tea production by region carries the same caveat.

Kawane tea was registered as a trademark in 2007. The definition has three parts (CHANOYU):

1. The leaf has to be plucked in Kawanehon-cho or Kawane-cho.
2. 100 percent of the aracha has to be processed at a factory inside those towns.
3. Anything short of 100 percent has to be sold as "Kawane-cha blend".

One wrinkle worth knowing. Kawane-cho no longer exists as a municipality. It was abolished on 1 April 2008, the year after the registration, and absorbed into Shimada City, which the city records in its own history as 平成20年4月1日、島田市は川根町と合併しました (Shimada City). The name survives in the rule, not on the map.

Read that last clause again. Blending isn't banned, it just has to say so on the bag.

CHANOYU lists Kawane tea as one of Shizuoka's three great regional brand teas, with Honyama-cha and Kakegawa-cha (CHANOYU).

Which cultivars does Kawane actually grow?

Yabukita, mostly. It has long been the mainstay here, it accounts for about 90 percent of Shizuoka tea, and Kawane growers took it up early after the war (Chameikan; Kawane Tea Portal, history). Our guide to Yabukita covers how it came to dominate a prefecture.

Okuhikari is the town's answer to that. It was introduced in 1985 specifically to give Kawanehon-cho a cultivar of its own, the trials came back markedly well, and seedling production started in 1987 (Chameikan). In October 2000 it won a Gold Award at the China International Famous Tea Competition in Hangzhou, Zhejiang (Chameikan).

Okuhikari is a Yabukita crossed with a Chinese variety. Distinctive aroma, brisk with a slightly sharp top note, and it gets matured for some months after picking, which brings it out mellow and soft and deep green (Chameikan).

The working line-up runs across the season: Yama-no-ibuki early, Yabukita and Koshun mid-season, Okuhikari late (CHANOYU).

The specialist end is the smaller and more interesting half. Those teas come out of the Moto-fujikawa area, and Shizu-kaori came from the Shizuoka prefectural research centre rather than a national one, which is why it is unlikely to spread far beyond the prefecture (Japanese Tea Sommelier).

The growing method at that end matters more. Top-of-range Kawane production uses unpruned plantations, a method called shizen-shitate, meaning the bush is left to grow in its natural form instead of being clipped into a hedge, and therefore hand harvests (Japanese Tea Sommelier; Japanese Tea Sommelier). That kind of cultivation is the basis for true gyokuro and matcha, and it is not common for sencha (Japanese Tea Sommelier). It's the same approach behind Asahina gyokuro, applied to a sencha.

Plucking starts in late April, later than the lowlands, because daylight hours in the valley are short. It's finished by late May (CHANOYU). One short window, once a year.

The Emperor's Cup, fifteen top prizes, and three eco designations

In 1964, Kawane took the first Emperor's Cup ever awarded in the Japanese tea industry (Kawane Tea Portal, history). The town's tea facility records the same industry-first without giving a year (Chameikan). Worth saying where that comes from. Both records are local ones, the growers' own portal and the town's own facility, so read the first-ever as Kawane's account of itself rather than an outside audit. The record since then is steadier than any one trophy.

In the ordinary sencha division of the National Tea Competition, Kawanehon-cho growers have taken the top prize 15 times. They have also taken the producing-region award, the team event, 14 times (Kawane Tea Portal). As of September 2026 they hold that producing-region award two years running (Kawane Tea Portal news).

The certifications are about the land rather than the cup. Chagusaba is the practice of cutting susuki grass from clearings around the gardens and laying it on the soil as organic matter (Kawane Tea Portal). The Shizuoka version was certified as a Globally Important Agricultural Heritage System in 2013, registered as the traditional tea-grass integrated system, pairing quality tea with biodiversity (Chagusaba GIAHS council).

Kawanehon-cho also sits in the registered area of the South Alps UNESCO Eco Park and holds FSC forest certification. It is the only place in Japan holding all three international eco designations (Kawane Tea Portal, about the town). The north of the town is the only Wilderness Area the Ministry of the Environment designates in Honshu, and in 2015 the town joined The Most Beautiful Villages in Japan (Kawane Tea Portal, about the town).

Two ways to take this further

Straight with you first: we don't sell Kawane tea, and we don't buy from any farm named here. This is reporting, not a product listing.

If you're drinking at home. Our own shelf is organic Japanese tea from producers we work with directly, and you can see the range in our tea shop.

If you're buying for a business. Cafes, retailers and tea rooms can ask about pricing, samples and lead times through our wholesale page.

Frequently asked questions

What is Kawane tea, and where does it come from?

Kawane tea is sencha produced in the Kawane area of the middle and upper Oi River, in central Shizuoka Prefecture (Shizuoka Prefecture). The gardens sit on both banks of the river, upstream of Shimada, mostly inside Kawanehon-cho (Japanese Tea Sommelier).

What does the 2007 Kawane-cha trademark require?

Three things. The leaf has to be plucked in Kawanehon-cho or Kawane-cho. All of the aracha, 100 percent, has to be processed at a factory inside those towns. Anything short of that has to be sold as "Kawane-cha blend" (CHANOYU).

Why is Kawane tea picked later than lowland Shizuoka tea?

Because the valley is ringed by mountains and daylight hours are short, so plucking starts in late April rather than earlier, and finishes in late May (CHANOYU). The same short daylight and wide day-to-night temperature gap are what hold bitterness down (Shizuoka Prefecture).

What does Kawane momikiri-ryu mean?

It is a hand-rolling style, 川根揉みきり流, set down by the tea master Nakamura Koshiro in the early Taisho era, and one of the eight hand-rolling schools of Shizuoka Prefecture (CHANOYU). Its rule is three negatives: do not over-steam, do not over-heat, do not over-roll (Kawane Tea Portal).

What was the Emperor's Cup in 1964?

Kawane's own tea portal and the town's tea facility both record it as the first Emperor's Cup ever awarded in the Japanese tea industry, with the portal giving the year as 1964 (Kawane Tea Portal, history; Chameikan). I have not found an independent record of the superlative. Kawanehon-cho growers have since taken the top prize in the ordinary sencha division of the National Tea Competition 15 times (Kawane Tea Portal).

What stays with me

A town of about five thousand people, mostly trees, that decided the way to be known was to be judged. Not advertised. Judged, leaf in a cup, by people who do nothing else. I keep thinking about the three negatives, because restraint is harder to teach than technique and much harder to sell. There's a confidence in a place that writes down what it refuses to do, then hands its name to anyone willing to follow the rule.

Sources

• 川根茶 (Kawane tea), Shizuoka Prefecture official food information centre. Production in the Kawane area of the middle and upper Oi River, the mountain ring with short daylight hours and a wide day-to-night temperature gap, tea in the Keicho 4 (1599) land survey register, needle-thin leaf brewed at low temperature, and the Kawane Tea Industry Cooperative address in Kawanehon-cho, Haibara District. Retrieved 2026-09-29.
• 地形・地質 (Topography and geology), Kawanehon-cho official town site. Elevation range of more than 2,400 m, Mt. Tekari as the highest point at 2,592 m, and mountain land making up 97 percent of the town. Retrieved 2026-09-29.
• 川根茶はなぜ美味しい (Why is Kawane tea good?), Kawane Tea Portal. Annual rainfall of 2,988.3 mm in Kawanehon-cho against a national average of 1,717.5 mm on Japan Meteorological Agency 1981 to 2010 data, the South Alps blocking warm Pacific air, mountain mist, gardens on draining slopes, the Chagusaba grass practice, the three negatives of Kawane momikiri-ryu, machine makers using Kawane's processing as a model for computer-controlled tea machinery, 15 top prizes and 14 producing-region awards in the ordinary sencha division of the National Tea Competition, and the town Agriculture and Forestry Centre's trials. Retrieved 2026-09-29.
• 川根茶の歴史 (History of Kawane tea), Kawane Tea Portal. Villages paying nengu in tea and the implied Muromachi-period origins, Kinokuniya Bunzaemon carrying Kawane tea to Edo about a century after the shogunate opened, the finest-sencha prize at a world's fair in Chicago and the Meiji export boom, Nakamura Koshiro establishing 川根揉みきり流 in Taisho, early post-war adoption of Yabukita, and the first Emperor's Cup in the Japanese tea industry in 1964. Retrieved 2026-09-29.
• 川根本町について (About Kawanehon-cho), Kawane Tea Portal. Area of 496.72 km², third largest municipality in Shizuoka, about 90 percent forest, the portal's population figure of about 7,300 (superseded here by the town's own count), the only place in Japan holding Chagusaba World Agricultural Heritage status plus the South Alps UNESCO Eco Park registration plus FSC forest certification, the only Ministry of the Environment Wilderness Area in Honshu, and admission to The Most Beautiful Villages in Japan in 2015. Retrieved 2026-09-29.
• Kawane Tea Portal home page. The September 2026 news that Kawanehon-cho took the National Tea Competition producing-region award for the second year running, 21 April as Kawane Tea Day, and the current regional keyword 川根みる芽伝統蒸し. Retrieved 2026-09-29.
• 川根のお茶 (Kawane tea), Foret Nakakawane Chameikan. The South Alps' 3,000 m peaks catching warm southern air, the Oi River's mist covering the leaf, Yabukita as the long mainstay and about 90 percent of Shizuoka tea, Okuhikari introduced in 1985 to give the town a cultivar of its own with seedling production from 1987, the Gold Award at the China International Famous Tea Competition in Hangzhou, Zhejiang in October 2000, Okuhikari as a Yabukita by Chinese-variety cross matured for months after picking, and the record of the Japanese tea industry's first Emperor's Cup, stated there without a year. Retrieved 2026-09-29.
• 川根茶の特徴や歴史とは (Kawane tea, character and history), CHANOYU, 6 June 2024. Traditional asamushi light steaming, the 2007 trademark registration and its three-part definition, gardens by 1599 and tea presented as nengu to Tokugawa Iemitsu in 1641, the four Meiji tea masters Sakamoto Tokichi, Muramatsu Kazo, Nakamura Togoro and Morota Shinzaemon, Kawane momikiri-ryu as one of eight Shizuoka hand-rolling schools, the cultivar line-up and picking window from late April to late May, the 2009 Shizuoka Prefecture survey figures of about 590 hectares, about 614 tonnes of aracha and about 800 million yen cited to the March 2015 prefectural tea white paper, Shizuoka's roughly 33,400 tonnes in 2010, Kawane as one of Shizuoka's three great regional brand teas, and the flavour description. Retrieved 2026-09-29.
• 川根本町の人口・世帯数 (Population and households), Kawanehon-cho official town site. The town's own current count of 5,341 residents in 2,569 households as of 1 September 2026, used here in place of the regional tea portal's older figure. Retrieved 2026-09-29.
• 島田市の概要 (About Shimada City), Shimada City official site. The city's own history records the merger with Kawane-cho on 1 April 2008, one year after the Kawane-cha trademark registration. Retrieved 2026-09-29.
• 静岡の茶草場農法 (Chagusaba), Chagusaba GIAHS official council. Certification of the Shizuoka Chagusaba method as a Globally Important Agricultural Heritage System in 2013, registered in English as the traditional tea-grass integrated system in Shizuoka, pairing high-quality tea production with biodiversity conservation. Retrieved 2026-09-29.
• Kawane senchas I, Japanese Tea Sommelier, 28 August 2020. Kawane as a mountain production area on both sides of the Oi River upstream from Shimada, the introduction of the Uji-style sencha method in 1837 at the village of Ikumi in Shimada, most production along the river with higher areas such as Tsuchiya at 600 m, unpruned shizen-shitate plantations and hand harvest as the basis for true gyokuro and matcha, and Haru-midori registered in 2000 from a Kanaya-midori by Yabukita cross. Retrieved 2026-09-29.
• Kawane senchas II, Japanese Tea Sommelier, 6 September 2020. Kawane senchas from the Moto-fujikawa area in the cultivars Shizu-7132 and Tsuyu-hikari, itself a Shizu-7132 by Asatsuyu cross, Shizu-kaori registered only in 2015 from an Oku-hikari by Kuritawase cross out of the prefectural research centre, and hand harvests on uncut shizen-shitate plantations. Retrieved 2026-09-29.