Zairai

Zairai (native seedling tea) is not a single cultivar but a collective term for tea trees grown from seed across many generations, each possessing its own unique genetic identity. Unlike registered cultivars that are clonally propagated through cuttings to ensure uniformity, every zairai tree is genetically distinct — meaning a single zairai tea garden is effectively a living library of diverse genetic material. This natural diversity produces a complexity in the cup that is impossible to achieve with a single cultivar: layers of mineral, moss, and aged wood notes interweave with vegetal freshness, and no two harvests are quite alike. Historically, all Japanese tea was zairai before the advent of modern cultivar breeding, but the widespread adoption of Yabukita from the 1950s onward reduced zairai acreage to a fraction of its former extent, with remaining trees typically found in remote mountain gardens. Today, a growing appreciation for terroir, biodiversity, and artisanal production has sparked a revival of interest in zairai, with progressive farmers and international connoisseurs alike recognizing these ancient trees as irreplaceable treasures of Japan's tea heritage.

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