I love flowers and I love exploring new flower-gardens and fields!
Here are some of my most favorites:.
Plum! Similar to the cherry flowers, but with stronger color and smell. Favorite place in Tokyo is this Koishikawa Korakuen garden which is over 400 years old and used to belong to the Tokugawa family. Best season for the plum here is from mid February until the beginning of March.
More info about this garden can be found in this useful site about parks in Tokyo: https://www.tokyo-park.or.jp/park/format/index030.html