What season is catkin? What season is catkin?

1, catkins usually appear in spring, which is the high season for catkins to fly, and it is the same everywhere. Catkin is the seed of willow with white fluff on it. Its edges are serrated and pubescent, and stipules are only born on sprouting branches.

2. In spring, catkins usually fly from 10 in the morning to 16 in the afternoon. At night, with the decrease of temperature and wind, the phenomenon of catkin flying decreases. Catkin flying season is the season of high incidence of various allergic symptoms.