Through selective breeding a frost resistant cultivar was developed over years. As a result, sayamacha cultivar evolved to have thick leaves that can withstand frosty temperature. Beside that, Sayamacha has some of the highest levels of antioxidants found in green tea. | Through selective breeding a frost resistant cultivar was developed over years. As a result, sayamacha cultivar evolved to have thick leaves that can withstand frosty temperature. Beside that, Sayamacha has some of the highest levels of antioxidants found in green tea. |