The Golden Shower Tree is a flowering plant in the family Fabaceae, native to southern Asia, from southern Pakistan east through India to Myanmar and south to Sri Lanka. It is the national tree of Thailand.

Cassia fistula is widely grown as an ornamental plant in tropical and subtropical areas. It blooms in late spring. Flowering is profuse, with trees being covered with yellow flora, with almost no leaf being seen. It does not grow well in dry climates. Growth for this tree is best in full sun on well-drained soil; it is drought- and salt- tolerant, but will be damaged by even short spells of freezing weather. It can be subject to mildew, leaf spot and root diseases.