Tea plants that produce tencha leaves, for powdered green tea, are grown in the shade "under reed screens for ten days" and "under straw sheets for ten days" in order to keep them out of direct sunlight, this is the same method used to grow tea plants for the highest quality green tea called gyokuro, and which is very different from the method for growing ordinary tea.
碾茶に用いる茶は煎茶に用いるものとは異なり、葭簀（よしず）と藁（わら）を用いて直射日光を遮り「簀下十日、藁下十日」被覆栽培する（玉露と同様の栽培法）。