The haiku "Canola flowers; the moon rises in the east, the sun sets in the west" by Yosa Buson was inspired by the spring season when the canola flowers bloom. This piece captures the beauty of a tranquil spring evening, highlighting the harmonious balance of nature as the sun sets in the west and the full moon rises in the east.
Buson's motivation behind this haiku was to capture the ephemeral beauty of nature and the serene moment of transition between day and night during spring. The simultaneous appearance of the setting sun and the rising full moon amidst the springtime bloom of canola flowers symbolizes the mystical beauty of twilight, a time between day and night.
The precise date when Buson composed this haiku is believed to be based on the old lunar calendar, on the 23rd day of the 3rd month in the year An'ei 3 (1774), which corresponds to mid to late April in the modern calendar, specifically between April 20th and April 25th. This period aligns with the conditions where both the setting sun in the west and the rising full moon in the east could be observed, suggesting that Buson might have indeed witnessed such a scene and was inspired to write the haiku during this time.
Buson's profound love for canola flowers and his dedication to capturing their beauty in numerous haikus is also noteworthy. The spring landscape, adorned with fields of blooming canola flowers, served as a significant source of inspiration for Buson. His haikus reflecting on this scenery celebrate the arrival of spring and nature's bounty, showcasing his deep affection for the natural world.
Reference:
Romeo Shibayama, "When was 'Canola flowers; the moon rises in the east, the sun sets in the west' written?" April 3, 2015, from tenki.jp