Salinity is one of the major problems in crop production, especially in Mediterranean territories of the world. There is a universal curiosity in understanding the scenarios for agricultural land degradation due to several factors. The application of co-composted biochar has significantly augmented agriculture during the last era. We conducted a far-reaching review on the influence of co-composed biochar as an organic amendment for cultivating the most expensive spice, Crocus sativus L. (saffron), in saline soil under arid climatic conditions. We explored the positive influences on their production in dry regions where salinity is a limiting factor. Sustainable Agricultural techniques, including consumption and production, must be followed from an integrated and universal perspective. The key inputs for crop production are healthy soil, land, irrigation, and natural plant resources. As these resources are becoming increasingly scarce in different parts of the world, managing and using them sustainably becomes crucial. Improving and managing techniques on existing agricultural lands, such as refurbishing damaged lands via sound agrarian methods, would reduce the pressure to clear forests for agricultural production (SDG GOAL-2, 5). Though several investigations focused on co-composted biochar production and application so far need to be more comprehensive, there is adequate evidence to enlighten their significance in supporting environmental safety and sustainable farming. Based on the review, we recommended upcoming research to comprehend the mechanism of co-composted biochar practices better to stimulate an understanding of its function over time.