In which season will you plant Wei Zihua in front of the lower hall of the Forbidden City?

"Wei Zihua seeds in front of the lower hall of the Forbidden City" was written in summer. From the Tang Dynasty poet Han Wo, "Jiazi went from Changsha to Liling in summer and May, and talked about solitude." . This poem depicts the scenery and atmosphere in summer. The author came to a quiet place in summer. Osmanthus fragrans is a blooming flower in summer.