What is Leaf•Coat™? Leaf•Coat™ is a ready-to-use product that strengthens the plant en protects the plant against unwanted insects and molds. Leaf•Coat™ is a product made from natural latex that was developed to restrain evaporation. Within a few hours after application, a very thin elastic layer forms around the leaves. This natural latex creates a protective, permeable, self-degradable layer on the leaf, while at the same time it allows the passage of air and light. This thin layer is however effective enough to protect the plant against pests and diseases.