Many people say that catkins are actually wrong, because most of the northern shelterbelts are poplars, so the number is far more than that of willows.

This is the Mao Mao of Poplar. Let's call it Yang Xu.

This is derived from the biological characteristics of Salicaceae tree species, whose flowers are unisexual, dioecious and without perianth. In spring, before the young leaves grow, the male flowers on the male plants bloom first. After a period of maturity, the anthers on the male inflorescence naturally crack, pollen flies out for pollination, and then the male inflorescence gradually withers and falls off. What we see like caterpillars under some poplars in spring is the male inflorescence of poplars.

A little later than the male flowers, the female flowers on the female plant began to open, and with the development and maturity of the female inflorescence, the fresh tender leaves on the female tree began to grow slowly. The female inflorescence is a spike composed of several small flowers. After each floret develops, it grows into a small capsule. The sac is covered with white flocculent villi, and there are some seeds developed from embryo sac like sesame in the middle of the villi. With the continuous development and maturity of the capsule and seeds, the capsule gradually cracked. Those,