A field experiment was conducted during Rabi season of 2023-24 at the Vegetable Research Farm Maharajpur, Department of Horticulture, Jawaharlal Nehru Krishi Vishwavidyalaya, Jabalpur, Madhya Pradesh, to evaluate the effect of imazethapyr on weeds and productivity of garden pea (Pisum sativum var. hortense L.). The predominant weed species were Medicago polymorpha, Avena fatua, Cynodon dactylon, Parthenium hysterophorus, Cyperus rotundus, Alternanthera sessilis, Spergula arvensis and Cichorium intybus. Among the tested herbicidal treatments, the post-emergence application (PoE) of imazethapyr 75 g/ha at 20 days after seeding (DAS), was observed to be the most effective in reducing both weed density and biomass with highest weed control efficiency (79.33% and 88.42% at 25 and 50 DAS, respectively), lower weed index of (-13.19%) and higher green pod yield without causing any phytotoxic effects on the crop.