Biologically, the sunflower ( himawari ) is heliotropic; it is defined by its devotion to the sun. It wakes with the dawn and follows the light across the sky. To say a sunflower blooms at night is a subversion of its very identity.
In a small valley surrounded by mountains, there was a village called Himawari-no-Sato. Every summer, the villagers planted sunflowers—tall, golden, and turning their faces toward the sun from dawn to dusk. The festival of Taiyō no Hi celebrated the brightest sunflower in the field. himawari wa yoru ni saku top
The ability to thrive even when the "sun" (happiness or luck) isn't shining. Biologically, the sunflower ( himawari ) is heliotropic;