What is guttation?

Guttation is the loss of water in the form of droplets from hydathodes (small pores) on the leaf margin of a small herbaceous plant. Water has the ability to rise up to 2 feet on its own through the xylem of the plant. During the evening or early morning, when the rate of absorption by roots exceeds the rate of transpiration (evaporation) by leaves, a lot of water gets accumulated in the plant body which can damage the cells. Plants have hydathodes at the end of the veins, through which this excess water is lost in the form of droplets. It takes place mostly in small plants like banana, rose, etc.