Traditional gardening calendar ?
I recently read a novel (半島へ by Inaba Mayumi) where the protagonist often refers to a "24 seasons calendar" (二十四節気) in order to do her gardening.
The calendar supposedly mentions when to plant flowers of all sorts, bulbs, crops, fruit trees, etc ; when to harvest those, and overall seems like a very complete and useful guide, while also showing traditional and poetic aspects of the passing of seasons in Japan.
I was wondering if any of you guys were using something similar ? Or maybe, would you happen to have recommendations about comprehensive gardening guides / calendars specific to Japan ?