India is a global leader in spice production, with Gujarat playing a crucial role in cultivating major seed spices like cumin and coriander. This study evaluates the impact of the National Horticulture Mission (NHM), launched in 2005-06, on the area, production, and yield of these spices in Gujarat. Using compound growth rate and decomposition analysis across three distinct periods (pre-NHM, post-NHM, and overall), the study finds that NHM significantly contributed to the growth of cumin and coriander production—primarily through area expansion and yield improvements. Cumin saw a 989% increase in area, 1,763% in production, and 83% in yield, while coriander experienced a tenfold rise in area and nearly twentyfold growth in production after NHM implementation. District-level analyses reveal that yield improvements played a greater role in cumin growth, while coriander growth was more influenced by area expansion, especially post-NHM. The study underscores NHM’s role in boosting Gujarat’s spice economy and highlights the need for continued investment in technology and extension services to sustain and enhance these gains.