answersLogoWhite

0

They are to prevent the tea bushes from freezing over in the winter. They stir up the atmosphere so cold air can't settle at the bottom. I imagine since places famous for tea (like Shizuoka) don't ever get all that cold, all the air needs is a little stir to keep the leaves from freezing.

User Avatar

Wiki User

12y ago

What else can I help you with?