This is Volume 1 of a two-volume set that explores the growing challenge of viral diseases in horticultural crops. While this volume focuses on vegetable crops, Volume 2 complements it by addressing viral threats in fruit crops, together offering a comprehensive understanding of plant virus epidemiology and management in the context of a changing climate. This volume delves into how viruses emerge, spread, and affect the quality and yield of vegetables. It explains the interactions between viruses and their hosts, emphasizing modes of transmission—especially via seeds and insect vectors—and the influence of climate change on viral outbreaks. Readers are introduced to cutting-edge diagnostic and management tools including CRISPR, portable testing kits, virome analysis, and omics-based technologies (genomics, transcriptomics, proteomics, and metabolomics). The book also explores sustainable management strategies such as gene editing, RNA-based sprays, and the use of endophytes and phytohormones. A valuable resource for students, researchers, plant pathologists, horticulturists, and agricultural professionals, this volume provides science-backed insights and practical solutions for managing virus-related challenges in vegetable cultivation.