Uji, Nishio, Kagoshima, Shizuoka: Japan's Matcha Regions and Why They Taste Different

In April 2025, a cold frost dropped onto Kyoto's tea fields during the exact two-week window when tencha buds were forming. The timing could not have been worse. Uji's hand-picked tencha harvest fell from 10,216 kg in 2024 to 6,140 kg, a 40 percent collapse, according to Ministry of Agriculture data cited by Uji Matcha Tea. The same season, a region most tea drinkers couldn't place on a map became Japan's number-one producer of first-flush tea for the first time since records began in 1991. That region is Kagoshima.

Where your matcha grows is not a romantic detail. It is becoming the difference between a tin that exists and one that doesn't.

First, the leaf everything starts from

Every matcha begins as tencha, and tencha is the reason matcha tastes like nothing else. The plants are shaded for 20 to 30 days before harvest. Modern synthetic tarps cut sunlight by roughly 60 to 75 percent; about ten days in, some farmers add a second layer to reach around 90 percent (Mizuba Tea). Traditional honzu straw screens, now rare, can achieve 95 to 98 percent shading across multiple stages. Starved of light, the leaf stops converting its amino acids into catechins and instead piles up L-theanine, the compound behind matcha's umami, along with chlorophyll, the source of that vivid green.

Then comes the step that separates tencha from every other Japanese tea: it is steamed and dried but never rolled. Other green teas get rolled into needles. Tencha stays flat, the stems and veins are stripped out, and only the leaf blade is stone-ground into powder. Because you drink the whole leaf rather than discarding it after a steep, the nutrients arrive far more concentrated (Far East Tea Company).

If you've heard of gyokuro and wondered how it differs: same shading, same care, but gyokuro gets rolled into needles and steeped, then the leaves are thrown away. Tencha gets ground. That single fork in the process is the whole distinction.

The four regions, by character

Region	Share	Character	The detail that explains it
Uji (Kyoto)	~3% of volume, premium segment	Rich umami, creamy body, marine sweetness, almost no astringency	An ~800-year history; river-valley mists provide natural shade; pioneered the reed-screen shading method in the 16th century
Nishio (Aichi)	~20% of Japan's tencha	Bright, clean, moderately vegetal, consistent	87 growers, deeply specialized; over 90% of the city's tea fields grow tencha (One With Tea); seeds reportedly came from Uji in 1872–1884
Kagoshima (Kyushu)	~40% of national tencha	Full-bodied, earthy, bold, moderate astringency	Volcanic soil, flat terrain, heavily mechanized — built for scale
Shizuoka	30–35% of all Japanese tea, but only ~2% is tencha	Light, refreshing, delicate; less sought for matcha specifically	Mt. Fuji volcanic soil; deep-steaming (fukamushi) softens astringency

A note for premium buyers worth knowing: Yame in Fukuoka, only 3 to 4 percent of national tea volume, produces what tasters call "liquid umami," and reportedly controls around 45 percent of Japan's gyokuro (per First Agri, though no government figure confirms it). If a label names Yame, someone is paying attention to amino acids.

The production shift nobody outside Japan noticed

For generations the headline tea region was Shizuoka. That era is ending.

In 2024 Kagoshima overtook Shizuoka in total annual tea production, 27,000 tonnes against 25,800. In 2025 it went further and surpassed Shizuoka in first-flush (ichibancha) production too, the first such reversal since statistical surveys started in 1991 (First Agri). Volcanic soil, flat fields you can farm with machines, and a warmer climate let Kagoshima scale in a way Uji's tiny hand-tended plots never could.

Here is the catch, and it matters for what you buy. Kagoshima's expanding output is filling the commercial-grade gap, but Kagoshima tencha cannot simply stand in for Uji's premium first-flush leaf. They are different teas grown for different ends.

So why does Uji still cost more

Because Uji is doing the expensive thing on purpose. Hand-picked first flush, tiny lots, mist-shaded valleys, methods that resist scaling. When that 2025 frost hit, Uji had no buffer of volume to absorb it, which is exactly why the price spike landed hardest there. The premium isn't only prestige. It is the cost of farming the slow way in a place that can't farm any other.

For what the frost did to prices, and why they aren't coming back down, read the 2026 shortage explainer.

Key facts

• Matcha is made only from tencha: shade-grown 20–30 days. Modern tarps cut sunlight ~60–75%; with a second layer ~90% is reached (Mizuba Tea). Traditional honzu straw shading can reach 95–98%. Leaf is steamed, dried, never rolled, then stone-ground (Mizuba Tea, Far East Tea Company).
• Uji (~3% of volume) leads the premium segment; Nishio (~20% of tencha) supplies consistent mid-grade; Kagoshima (~40% of tencha) scales with mechanization; Shizuoka grows mostly non-matcha tea (One With Tea, Ooika).
• Kagoshima overtook Shizuoka in total production in 2024 and in first-flush in 2025, the first such reversal since 1991 (First Agri).
• The April 2025 Kyoto frost cut Uji's hand-picked tencha harvest 40% (10,216 kg → 6,140 kg) per MAFF data cited by Uji Matcha Tea.