Sayama Tea: Japan's Northernmost Major Tea Region

By Christian Mauerer, founder of One with Tea. I source organic Japanese tea directly from farms in Shizuoka, Kagoshima and Fukuoka, and write up the regions we buy from and the ones we don't.

Sayama tea is sencha grown in Saitama Prefecture, just north of Tokyo, in a belt of gardens centred on the cities of Iruma, Tokorozawa and Sayama. It gets picked twice a year instead of four or five times, it gets finished over a hotter fire than sencha normally gets, and the prefecture that grows it has bred eleven of its own cultivars, most of them for the cold. I haven't stood in a Sayama garden yet. We don't sell Sayama tea. I've been reading about it for two years anyway, because Sayama is where Japanese tea runs out of warmth, and what farmers do at that edge is worth understanding.

Where Sayama Tea Actually Comes From

Three cities, not one. Sayama tea is grown across south-western Saitama, and the largest producer by both volume and planted area is Iruma City, alongside Tokorozawa and Sayama City, with smaller pockets in the Chichibu and Kodama districts (Iruma City; Saitama Prefecture Tea Research Institute). The name confuses people because Sayama City is not the centre of Sayama tea. The name comes from the Sayama Hills, and the registered trademark scope covers the whole hill region plus the neighbouring western edge of Tokyo.

The gardens sit on the Musashino Plateau, and most of the big ones sit on a shelf of it called the Kaneko plateau, which the Iruma City Museum describes as the northernmost limit in Japan for large-scale tea gardens. The ground under those gardens is old river sand and pebbles under a thick cap of volcanic ash, blown in from Mount Fuji and its neighbours, which weathered into the red Kanto loam. It drains so freely that rain sinks straight through. That made the plateau useless for paddy rice and pushed local farming toward dry-field crops for centuries. It is also exactly the drainage a tea plant wants.

Locals have a name for the combination: jōshitsu-kakan, wet above and dry below. Tea generally wants more than 1,300mm of rain a year, Iruma gets roughly 1,500mm, and the ground beneath it lets every drop go (Iruma City Museum ALIT). Wet sky, thirsty soil. That is the whole terroir in two words.

Is Sayama Japan's Northernmost Tea Region?

Not of tea. Of large-scale tea, yes, and the distinction matters. Japan grows tea from Akita in the north down to Okinawa (Iruma City). Murakami, at the northern tip of Niigata, calls itself the northernmost commercial tea-producing area in the country (Murakami City Tourism Association).

What Saitama actually claims is narrower and more interesting. Its own tea research institute states that Saitama, which produces Sayama tea, is the economic northern limit of green tea production. The Iruma City Museum puts it the same way from the other side: the Sayama production area is the northern limit among Japan's large-scale tea regions. So the honest sentence is this one: Sayama is where commercially significant green tea stops, not where tea stops.

That distinction explains the rest of the region. When you farm at the edge of profitability you stop competing on volume, and start competing on the one thing the cold gives you for free. You can see where that leaves Saitama in our roundup of Japan's tea production by region.

What Does Sayama Firing Do to the Cup?

Hi-ire is the finishing fire, the heat applied at the very end of processing. It does two jobs: it dries the leaf properly so the tea keeps, and it generates heat-born aroma that changes how the tea tastes and smells (Saitama Prefecture). Every region does it. Sayama does it hotter.

Sayama hi-ire fires at a relatively high temperature and takes about 90 minutes end to end. The results are visible before you taste anything: the dry leaf looks whitish rather than deep green, and the liquor pours a clear golden colour instead of the jade you might expect from sencha. Then it hits you as a strong roasted aroma and a sweet, thick, rounded body (Iruma City Museum ALIT).

That is a craft decision, not a setting. Masahiro Okutomi, the 15th-generation proprietor of his family's farm in Sayama, described it to CHAGOCORO, Ito En's tea media, as a balance the maker sets by hand. How strong should the firing aroma be, and how should it sit against the sweetness the Maillard reaction creates when amino acids and sugars meet heat? He adjusts by season, firing spring leaf gently to protect the delicate buds and pushing harder in autumn (CHAGOCORO).

There's a local tea-picking song that Saitama Prefecture, Iruma City and the Japan Patent Office all quote in the same breath: 色は静岡、香りは宇治よ、味は狭山でとどめさす, colour is Shizuoka, aroma is Uji, but taste is settled by Sayama. It's a boast, and a fair description of what a hotter fire buys you. Our notes on the Shizuoka tea region and the Uji matcha region cover the other two corners of that line.

Which Cultivars Did Saitama Breed for the Cold?

Saitama's tea research institute grows more than 200 cultivars and, as of July 2026, 11 registered cultivars trace their breeding to Saitama (Saitama Prefecture Tea Research Institute). That is an unusual amount of breeding for a region this size, and the cold is why it exists.

Tea cultivars bred by Saitama Prefecture, with registration year and defining trait

Cultivar	Chanorin no.	Registered	Known for
Sayamamidori	No. 5	1953	High in nerolidol, the compound behind a sweet floral note. Withering turns it into a fresh ester aroma.
Okumusashi	No. 26	1962	Late and cold-hardy. Later adopted for black tea on the strength of its aroma.
Sayamakaori	No. 31	1971	Earliest-picked cultivar in Saitama, cold-hardy, high-yielding. The fifth most planted cultivar in Japan.
Toyoka	No. 33	1976	Cold-hardy and generous. Named for the Toyooka test site where it was bred.
Fukumidori	No. 36	1988	Full aroma and a round taste, aimed at high-grade tea.
Hokumei	No. 43	1995	The name means a tea born in Saitama near tea's northern limit. Watched as a semi-fermented tea, between green and oolong.
Musashikaori	No. 46	2001	Citrus-toned aroma and mild umami. Stays compact.
Sainomidori	No. 50	2006	Disease-resistant and easy to process.
Yumewakaba	No. 53	2008	Yields like Yabukita but handles cold and disease better.
Okuharuka	-	2015	Very late and high-yielding, with a faint cherry-leaf scent.
Sayamaakari	-	2021	Out-yields Sayamakaori and resists mulberry scale.

The work hasn't stopped. In December 2025 Saitama filed registration applications for two more cultivars co-bred with Ito En, named Sai no Megami and Sai no Ito, and those are still working through the process (Saitama Prefecture Tea Research Institute).

One number puts that in context. Yabukita covers just under 80% of Japan's planted tea area, but only about 65% of Saitama's (Saitama Prefecture). For a country this monocultured, that gap is real. If cultivars are your thing, we've written up Sayamakaori, Sayamamidori and Sayamaakari individually, and the wider Japanese tea cultivar guide explains why Yabukita took over in the first place.

Two Harvests, One National Champion

Saitama picks twice a year. First flush runs late April to late May, second flush late June to mid July, and that's the season (Iruma City). Regions south of Saitama manage three pickings. Kyushu manages four or five.

You can read the consequence straight off the national statistics. In the 2021 crop year, the most recent Saitama publishes in this form, the prefecture had 783 hectares planted, eighth in Japan, but produced 728 tonnes of aracha, the unrefined crude tea, only tenth (Saitama Prefecture). More land, less tea. The prefecture names the reason itself: two pickings, not four. Gardens sit under frost fans and tunnel covers through winter, and the plant spends half the year not growing.

What the plant does instead is thicken. Slow growth through cold produces the dense leaf the region builds its flavour on, and the farms have spent two centuries learning to finish that leaf rather than out-produce anyone.

The clearest proof shows up at competition. At the 34th National Hand-Rolled Tea Competition, judged on 15 July 2026 in Shizuoka City, Makoto Miyaoka of Miyūen took first place and the Minister of Agriculture, Forestry and Fisheries Award. He is a member of the Iruma City Hand-Rolled Sayama Tea Preservation Society, and he scored a perfect 200 points across all five judged categories: shape, colour, aroma, liquor colour and taste. It was his second national title. He'd asked his pickers to take slightly longer buds than usual, and credited that for the bolder shape (Iruma City; Jiji Press).

Iruma also took the region prize for the 21st consecutive year, its 26th win overall, out of 82 entries from 15 prefectures (Iruma City). One city has held that title for two decades running. That is not luck.

How Do You Taste Sayamacha Well?

Buy it knowing it was built for flavour over fragrance. Sayama's hotter firing means the aroma arrives roasted rather than green, so the very cool, very slow infusion that suits a shaded gyokuro will under-serve it. Give it normal sencha treatment and let the fire show. For the mechanics, our guide to sencha covers water temperature and steep times.

Two practical notes before you shop. First, Sayama tea is not a geographical indication. It's protected as regional collective trademark No. 6564294, held by JA Irumano, covering tea produced in Iruma, Sayama, Tokorozawa and the surrounding area plus the adjacent western edge of Tokyo (Japan Patent Office). Separately, Japan's agriculture ministry registered "Japanese tea" itself as a GI on 10 July 2026, in a round that took the national register to 170 products (MAFF). Neither of those tells you which farm made your tea.

Second, expect variation. The dominant business model in Sayama is jien, jisei, jihan: grow it, process it, sell it, all under one roof. Okutomi told CHAGOCORO that this is why the region is so hard to summarise, because taste and aroma differ significantly from farm to farm. Two bags labelled Sayamacha can taste like different regions. Buy the farm, not the label.

There's a Saitama footnote worth carrying. Kenzō Takabayashi (1832-1901), who ran a tea garden in Sayama, received patents No. 2, 3 and 4 when Japan's patent system opened in 1885, all of them tea machines. In 1898 he patented the Takabayashi-style coarse-rolling machine, patent No. 3301, which built the hand-rolling motion into a machine and opened the way to mechanised tea processing (National Archives of Japan). The region at the cold edge of Japanese tea is also where the industry learned to scale.

We source our organic matcha from farms further south, where the climate does something else to the leaf entirely. I'd still like to taste a Sayama first flush next to one of ours, fired the way Sayama fires it, and find out how much of the difference is climate and how much is the fire. If you're buying for a cafe or a shop and want to talk about where a specific lot comes from, our wholesale page is the place to start.

Frequently Asked Questions

What is Sayama tea?

Sayama tea, or Sayamacha, is Japanese sencha grown mainly in Iruma, Tokorozawa and Sayama in Saitama Prefecture, north of Tokyo. It is known for a hotter-than-usual finishing fire called Sayama hi-ire, a thick sweet body, and only two harvests a year.

Is Sayama the northernmost tea region in Japan?

Not quite. Saitama Prefecture describes itself as the economic northern limit of green tea production, and Iruma City Museum calls Sayama the northern limit among Japan's large-scale tea regions. Tea is grown further north than that, as far as Akita, but not at commercial scale.

Why is Sayama tea only harvested twice a year?

Because Saitama is cold for tea. The first flush runs late April to late May and the second late June to mid July. Regions south of Saitama get three pickings, and Kyushu gets four or five. The slower growth produces thicker leaves, which is what the region's flavour is built on.

What does Sayama hi-ire mean?

Hi-ire is the finishing fire applied at the end of processing, which dries the leaf for storage and creates heat-born aroma. Sayama fires at a relatively high temperature over roughly 90 minutes, which gives the dry leaf a whitish look, the liquor a clear golden colour, and the cup a strong roasted aroma with a sweet thick body.

Which cultivars come from Saitama?

As of July 2026, eleven registered cultivars were bred in Saitama: Sayamamidori (1953), Okumusashi (1962), Sayamakaori (1971), Toyoka (1976), Fukumidori (1988), Hokumei (1995), Musashikaori (2001), Sainomidori (2006), Yumewakaba (2008), Okuharuka (2015) and Sayamaakari (2021). Sayamakaori is the fifth most planted tea cultivar in Japan.

Sources

1. Saitama Prefecture Tea Research Institute, "The story of Sayama tea", updated 19 January 2026. Retrieved 25 September 2026.
2. Saitama Prefecture Tea Research Institute, "Tea cultivars bred by Saitama Prefecture". Retrieved 25 September 2026.
3. Saitama Prefecture Tea Research Institute, "Tea cultivars grown in Saitama Prefecture". Retrieved 25 September 2026.
4. Iruma City, "Sayama tea basics", updated 31 March 2023. Retrieved 25 September 2026.
5. Iruma City Museum ALIT, "Climate and characteristics of the Sayama tea region", updated 23 October 2020. Retrieved 25 September 2026.
6. Iruma City, "Iruma is Japan's number one in hand-rolled tea", updated 25 September 2026. Retrieved 25 September 2026.
7. Japan Patent Office, regional collective trademark No. 6564294 "Sayamacha". Retrieved 25 September 2026.
8. Ministry of Agriculture, Forestry and Fisheries, GI registration of "Japanese tea", 10 July 2026. Retrieved 25 September 2026.
9. National Archives of Japan, "The invention of the tea leaf roller (Kenzō Takabayashi)". Retrieved 25 September 2026.
10. CHAGOCORO, "A Sayama tea farm with roots in the Edo period: Masahiro Okutomi", 2 June 2020. Retrieved 25 September 2026.
11. Jiji Press, "Minister's award at the National Hand-Rolled Tea Competition, Iruma, Saitama", 31 August 2026. Retrieved 25 September 2026.
12. Murakami City Tourism Association, "Murakami tea, the northern limit". Retrieved 25 September 2026.