Usually, mango trees bloom in December. An indication that one of them is about to blossom is the light yellowish or pinkish tender leaves that come. They will soon turn dark green.
The flowers have an exotic smell that fills the air during season. A good portion of the blooms fall off particularly if there is rain clouds or rain.
Given below are photos that I took in Chennai and Olavipe. Click on them to enlarge. Copyright is reserved.
Also please see:
Mango trees: 'ottu mavu' and 'nattu mavu'