Osmanthusflowers at Shanghai Botanical Garden.

Osmanthus in full bloom at Shanghai Botanical Garden.

The city air is currently filled with the aroma of sweet-scentedosmanthusas the flowers are in full bloom, Shanghai's greenery authorities said on Monday night.

GuilinPark, Shanghai Botanical Garden,GuyiGarden, GuchengPark, Zuibaichi Park andFangtaPark are some of the best places to appreciate the floral display, the Shanghai Public Sanitation and Greenery Bureau said.

GuilinPark, aJiangnan-style classic garden built in 1929 inXuhuiDistrict, is known for its dense woods of more than 1,000osmanthustrees of 23 varieties.

Osmanthusplants which should bloom in autumn were in flower at Shanghai Botanical Garden inXuhuias early as July this year.

Flowering has come two months earlier due to the weather, said WangYuqin,a botanist at the garden.

The rise in temperatures after a long plum rain season and humid and sultry air provided favorable conditions for the flower, said Wang.

"This wave of flowers is still blossoming slightly earlier than usual and it comes in much larger amount than the first wave of this year," Wang said.