Japanese tea growers are struggling to meet soaring overseas demand for matcha as erratic weather and heat stress threaten crop yields.
The surge in global popularity has turned a traditional cultural staple into a high-value export, but the environmental cost is mounting. If growers cannot stabilize production against a changing climate, the industry risks price volatility and a decline in the quality of the tea.
Production is centered largely in the Uji and Shizuoka regions. In these prefectures, farmers are attempting to expand output to keep pace with international markets. However, the effort is complicated by irregular springs and hotter nights, which scientists said can impact both the flavor profile and the overall yield of the plants.
Financial data highlights the scale of the boom. Exports of green tea, which includes matcha, reached a record-high value of 72.1 billion yen [1]. This financial peak reflects a growing international appetite for the powdered green tea, though the supply chain is currently strained.
To combat these challenges, some researchers are looking toward technology. Scientists are exploring the use of DNA tools to help protect the flavor and yield of the tea plants against rising temperatures. These tools may allow growers to identify and cultivate more resilient strains of tea that can withstand the heat stress currently affecting the Uji and Shizuoka fields.
Despite the technological hope, the immediate reality for many growers remains a struggle with supply constraints. The combination of record-breaking export values and unpredictable weather has created a precarious environment for the traditional industry.
“Exports of green tea reached a record-high value of 72.1 billion yen.”
The matcha boom represents a broader tension between the commercialization of traditional Japanese agriculture and the physical limits imposed by climate change. While record export values suggest a lucrative market, the reliance on specific microclimates in Uji and Shizuoka makes the industry vulnerable. The shift toward DNA-based agricultural science indicates that the future of matcha may depend more on biotechnology than on traditional farming methods alone.
