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The catkin season will reach its peak over the next two weeks when irritating white cylindrical flower clusters detach from trees and are blown across the city, Shanghai's greenery authorities said on Friday.
The dry, sunny and hot weather, coupled with breezes in the following days, is being blamed for an outbreak of catkins which should last till early May, the Shanghai Greenery and Public Sanitation Bureau said.
People with allergies may experience coughs, sneezing and itching.,
Catkins come mainly from the city’s plane, poplar and willow trees.
Shanghai has about 275,900 trees along streets inside the Outer Ring Road, of which 48 percent are plane trees with the percentage even higher in downtown Huangpu, Xuhui, Jing'an and Changning districts, which will be most affected.
Since the winter, about 110,000 plane trees inside the Outer Ring Road have been trimmed to prevent them producing catkins, but about 20,000 have been left untouched due to restrictions such as space and traffic conditions, according to the bureau.欧博开户声明:该文看法仅代表作者自己，与本平台无关。转载请注明：usdt转账手续费（www.payusdt.vip）：Problematiccatkinseasonsettoreachpeak