https://www.kanpai-japan.com/japan-travel-guide/calendar-seasonal-flowers Kanpai Japan en 2026-04-17 Calendar of seasonal flowers in Japan Spring in Japan, Summer in Japan, Autumn in Japan, Winter in Japan https://www.kanpai-japan.com/sites/default/files/uploads/2026/04/flowers-japan-09.jpg Ueno PArk (Tokyo), Lotus flowers on Shinobazu pond in summer