In the past three decades, plant pathology—a major subfield of agriculture and horticulture—has grown and matured into a distinct field unto itself. As pathologists and educators, we appreciate the opportunity to finally meet a long-standing demand for a comprehensive introduction to plant pathology. This book will be especially helpful for the young, aspiring brains of aspiring plant pathologists since it presents the basics of fungus, classifications, and concepts of plant pathology in a condensed style that is accessible to undergrads. Plants can only flourish within the typical limits of light, temperature, and pH, as well as the soil & nutrition and water content. However, plants may and do get ill. The development and utility of plants may be stunted by even the smallest disturbances in their health. The most prevalent reasons of decreased or eliminated plant growth and output include plant diseases, bad weather, and insect pests. Plants are susceptible to disease whose etiological agents are comparable to those that harm animals and people. There is no proof that plants sense pain and anguish, but the progression of sickness in plants is the same as in animals and humans, and it is generally just as complicated.