I have indicated before how to do a week in Tokyo for <$1000, and I returned today from my latest sub-$1000 jaunt, which included Kokufu, Omiya, and Kobayashi's nursery.

Having never visited Kokufu before, I was astounded at the quality of the trees and their presentation. Kobayashi's museum was also a surprise at the quality of his collection - and I'd rate it better than the Omiya nurseries.
Here are some pics:
91st Kokufu 2017: