The largest grower of teas is China, closely followed by India.
India
I believe the answer to your question is China.
tea
3rd in annual production (after China & India). However, Kenya is #1 in the amount of tea exported.
oliveto tea india
olive tea
Sugandh Tea is known to be probably India's best quality and most liked tea. It is manufactured by Sugandh Tea Pvt. Ltd is an Indian non-alcoholic Best tea brand in India.
Oliveto tea
oliveto olive tea
The best tea in India is above the Himalaya mountain.
China has the numbers which claims it to be the largest producer of tea. India falls close second behind china in tea production. China Produces approximately 1,467,467 tonnes annually to be precise India produces about 991,180 tonnes.