presently
Various areas of Beijing have entered one after another
Willow flocculation period
Introduction to the Beijing Center for Disease Control and Prevention
Poplar is not a flower, and catkins are not flocculent
They are the capsule of willow after it is dehisced
Release the seeds
and accessory hairs (flocculents) on the seeds
The composition of the mixture
The willow fly is actually the mother tree of the willow
The process of using wind for seed dispersal
These flocculents
It can cause allergies in some sensitive people
Beijing CDC tips
Sensitive groups need to do a good job of fly protection
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Source: Beijing Daily