Matcha is the shade-grown green tea powder people whisk or dump into lattes, and Google Shopping interest for that keyword printed 56 the week of September 12 2026. That is up 7.69% from 52 on September 5 and up 27.27% from 44 on August 15, per Trends MCP get_growth on google shopping pulled September 17 2026. The 261-week get_time_series on the same source runs from September 18 2021 (first print 9) through September 12 2026 and peaked at 100 on August 16 2025. Same-week 2025 printed 32. The Asahi Shimbun dated the Kyoto tencha auction of May 9 2025 at 8,235 yen per kilogram. Google Search for matcha is 82 on September 12, down 5.75% from 87 over 7 days, a search story that fails the mover bar. Shopping is the source that clears the 30-day bar and still has a readable cart climb.
About matcha
Matcha is finely ground powder from shade-grown Camellia sinensis leaves, processed as tencha then milled, a definition shared by ISO 20715 from 2023 and by Japanese food labeling rules that require two to three weeks of covering before the leaf is picked.
Wikipedia traces powdered tea from Song China into Japan with the monk Eisai around 1191, then to sixteenth-century shade growing that produced modern tencha. Cheap hunmatsucha, crushed from unshaded leaves, is sometimes sold under the same name.
Price is the 2025 fact that still matters for anyone buying a tin. The Asahi Shimbun, on May 10 2025, reported that the year's first tencha auction on May 9 at JA Zen-Noh Kyoto in Joyo averaged 8,235 yen per kilogram ($56.80), 1.7 times the prior year and above the 4,862 yen record set in 2016. Farmers offered 22 lots totaling 1,678 kilograms, with more than 40 wholesalers bidding. The Global Japanese Tea Association's May 2025 report repeated those auction figures.
What the time series shows
Google Shopping interest for matcha printed 56 the week of September 12 2026, up from 52 on September 5 and 44 on August 15, a seven-week cart climb off a July trough that still sits 44 percent under the August 16 2025 peak of 100.
The last eight weekly prints are 28, 32, 42, 44, 54, 49, 52, 56. Same-week marks were 32 on September 13 2025, 18 on September 14 2024, and 12 on September 16 2023. Last year printed 94 on August 9 2025 and 100 on August 16, then 35 the next Saturday. Spring 2026 sat at 92 on April 11 and 89 on April 18, then 50 on May 30. The 90-day reading from 52 on June 13 to 56 is 7.69%. The 30-day reading from 44 to 56 is 27.27%. The chart window starts September 14 2024. Last-52 week-over-week sample standard deviation is 15.39%.
Why the page charts Google Shopping
A powder people buy should be tracked on a shopping source first, and Google Shopping for matcha clears the 30-day +25% bar while Google Search for the same keyword fails both the 7-day window and the 30-day window from an 82 print.
Google Search for matcha is 82 on September 12, down 5.75% from 87 on September 5 and down 15.46% from 97 on August 15. The 7-day print fails +20%. The 30-day print fails +25%. The 1-year print is +2.5% from 80, which fails +15%. Search is a high, cooling query. Shopping is the cart.
Google Shopping is the story source: 52 to 56 in the frozen weekly series over 7 days, 44 to 56 in 30 days, 32 to 56 in 1 year (+75.0%), 261 weekly points. Same-day get_growth on google shopping, 30-day window, puts ceremonial matcha at 40 (+66.67% from 24), matcha powder at 16 (+60.0% from 10), matcha tea at 27 (+42.11% from 19), and matcha latte at 47 (-2.08% from 48). Drink context: Starbucks fall menu and Dunkin. Source context: Google Shopping trends.
get_time_series with source google shopping and keyword matcha is the call behind the chart. get_growth on the same pair, windows 7D, 30D, and 1Y, is the headline math: 52 to 56 (+7.69%), 44 to 56 (+27.27%), and 32 to 56 (+75.0%). Mixing the Google Search 82 with the Shopping 56 would invent a story the APIs do not tell.
A copy-paste pair for Claude or Cursor:
get_time_series source="google shopping" keyword="matcha"
get_growth source="google shopping" keyword="matcha" percent_growth=["7D","30D","1Y"]
REST is the same body at https://api.trendsmcp.ai/api with Authorization: Bearer and mode set to get_time_series or get_growth.