What is the latest flower to wither in spring?

This question is really a bit difficult. How can I put it? There are different flowers all year round. Generally speaking, flowers will bloom all year round. The latest flower in spring, there is a traditional saying called twenty-four Hua Xinfeng. From slight cold to Grain Rain, * * * eight gas, one hundred and twenty days. Breathing once every fifteen days is divided into three periods, and breathing * * * twenty-four times every five days, each period should be a flower. Plum blossoms begin and neem flowers end. Some people say that the last flower in spring is Melia azedarach. When it is completed, it will be in the long summer solar term and enter the summer. There are tea buds before azadirachta flowers. After the tea bud blooms, only the neem flower remains. Neem flowers are not too expensive, so the ancients said, "It's time for tea buds to bloom." There are fewer flowers in summer, but some summer flowers are particularly long, such as hibiscus and Lagerstroemia indica, which last until the autumn frost comes. In addition, there are some flowers like Chinese rose, which can be found all year round except in the coldest and hottest period. Therefore, it is the happiest thing not to stick to the "earliest and latest", to know when the flowers will bloom and enjoy them at the most beautiful time in bloom, don't you think?