
Sua flowers (scientifically known as Dalbergia tonkinensis) often bloom during the seasonal change from winter to spring. This year, due to extreme weather conditions, the flowers bloomed earlier. Blooming in clusters, each Sua flower has a size of 7-9 mm with a light fragrance. Unlike other flowers, Sua flowers are in full bloom once a year, lasting about a week. Hanoi currently has more than 1,400 Sua trees along the streets of Tran Hung Dao, Thanh Nien, Giang Vo Lake and Thong Nhat Park.