This program covers the variety of cherry trees in Japan with photos and descriptions of each. The first part is dedicated to the varieties of cherry trees and Toemon Sano an expert in Japan who's family has taken care of a planted forest of cherry trees for three generations. The forest he cares for has over 150 varieties of cherry tree. Toemon Sano discusses how to examine the health of a tree. He shares his knowledge and experience. The first 18 minutes are dedicated to Toemon Sano. The second half covers the cultural importance of cherry trees. Here is a link to NHK, but sometimes they only make shows available for a limited time, so I can't say how long it will be available: Cherry Trees - Japanology Plus - Video On Demand - NHK WORLD - English This is the same program available on YouTube: The program is also available on the NHK app for Amazon Fire TV (again, I don't know how long it will be available) I hope you enjoy the documentary! I think it's definitely worth watching.