When November comes and rosewoods become green again an unusual phenomenon is witnessed for only a couple of weeks - it rains under the rosewoods no matter if it is a sunny or cloudy day.This is caused by an insect, the spittlebug, whose nymph feeds on this tree's sap. The nymph produces a spittle mass around the stalks which is a good cover against predators and keeps it moist. The foam is the waste product eliminated after sap nutrients have been absorbed, into which air bubbles are introduced through a breathing tube which is at the end of the abdomen of the nymph.
When the spittle masses become too heavy they disintegrate into drops. This is known as "the weeping of the tipu trees". If dripping is intense puddles are formed on the ground.
This phenomenon may be experienced under the rosewoods planted on the streets. But this phenomenon may well pass unnoticed since "the weeding of the Tipu trees" is confused with "the weeping of the balconies".