By the time summer arrives, the leaves are above water and the plant blooms. Next, after three to five days, the petals fall completely off. The cupules complete their development; each cupule has a number of holes, each hole containing an individual seed.
夏至，花葉繁茂，亭亭淨植，但三、五天裡，花瓣落盡，子房逐漸發展成蓮蓬，蓮蓬上一個個蓮室裡，有一個個心皮發育成的小堅果，就是蓮子。