Field trials were conducted at the College of Education for Pure Sciences, Ibn al-Haytham, University of Baghdad Iraq, during the 2023-2024 growing season to study the effect of vermicompost and aqueous extract of Conocarpus erectus leaves on the coriander plant (Coriandrum sativum L.). The experiment involved two factors: the first with two levels of vermicompost at 0 and 5 tons ha-1, and the second by spraying the aqueous extract of conocarpus plant leaves at 0, 10, 20, and 30 g L-1 concentrations. The interaction treatment with vermicompost at 5 tons ha-1 and extract spraying at 20 g L-1 concentration produced the best results for number of leaves (51.33 leaves plant-1), leaf chlorophyll content (41.77 SPAD), dry weight of the vegetative system (13.87 g plant-1), dry weight of the root system (6.30 g plant-1), leaf area (14.533 cm2 plant-1), number of inflorescences (44.37), yield per hectare (669.21 kg ha-1), percentage of volatile oil in the coriander leaves (0.449%), and the specific gravity of oil (0.71 mg). The control treatment gave 30.67 leaves plant-1, 26.57 SPAD, and 5.83 g plant-1 1.90 g plant 1 Address for Correspondence Received: 2025-12-07 DOI: , 5.033 cm2plant-1, 19.57 inflorescences 303.07 kg ha-1, 0.213%, and 0.33 mg, respectively, for the same growth indicators. This study proved that coriander plants respond positively to vermicompost fertilizer and spraying with the aque
