The genus Crocus (family Iridaceae) comprises approximately 85-100 species distributed across the Mediterranean, Central and Southern Europe, and Western to Central Asia, where they are adapted to temperate climates with distinct seasonal variations. Among them, Crocus sativus L. (saffron) is a unique sterile triploid species (2n = 3x = 24) of significant economic importance, widely recognized as the world’s most expensive spice. This manuscript provides a comprehensive overview of the taxonomy, origin, cytology, botany, phenology, chemical composition, agro-climatic requirements, cultivation practices, and current challenges associated with saffron. Saffron is believed to have originated through autotriploidy and is propagated exclusively through corms due to its inability to produce viable seeds. Its growth cycle is highly synchronized with seasonal climatic conditions, comprising dormancy, vegetative growth, and flowering phases. The crop thrives in well-drained, calcareous soils under temperate climates, such as those found in the Kashmir valley, which represents the primary saffron-growing region in India. The quality of saffron is determined by key bioactive compounds crocin, picrocrocin, and safranal responsible for its color, taste, and aroma, respectively. Despite its high value, saffron cultivation faces numerous constraints, particularly in Kashmir, including declining productivity, climate variability, inadequate irrigation, soil degradation, disease incidence, and market challenges. Its genetic uniformity and sterility further limit conventional breeding efforts. However, recent advances in molecular markers, biotechnological approaches, improved agronomic practices, and irrigation innovations such as those introduced under the National Saffron Mission have shown potential in enhancing productivity and sustainability. The manuscript highlights the need for an integrated approach combining traditional knowledge with modern scientific interventions to address existing limitations. Emphasis on climate-resilient practices, quality planting material, sustainable soil and water management, and strengthened market linkages will be essential for revitalizing saffron cultivation and ensuring its long-term economic and ecological sustainability.