Willow is a very beautiful and interesting tree. No wonder growing in the parks of our city, is a great object for photos in the background, and separately. Why is willow crying?Because willow is one of the few woody plants capable of guttation, usually it is inherent in herbaceous forms. The guttaciej (from lat. gutta — drop) , the selection of the leaves of plants of droplet liquid water. This occurs when the roots absorb more water than the leaves evaporate.