This research aimed to find out the effects of weed extracts with different types of solvents toward downy mildew (Perenosclerospora maydis) and the corn growth and crops. It was conducted from March to August 2021 in the Experimental Garden of the Faculty of Agriculture and Fisheriesof Universitas Muhammadiyah Purwokerto using one factor completely randomized design which used cogon grass and goat weed with ethanol 96%, ethyl acetate, and n-hexane as the solvents. The results indicated that (1) The treatment of supplying weed extract with different types of solvents had substantial effects on the leaf area and the degree of downy mildew. Meanwhile, there were no significant effects on plant height, the number of cobs, the weight of cobs with husk, and weight of cobs without husk, and (2) The treatment of weed extract fungicide with various types of solvents was more effective in controlling downy mildew with an intensity of 6.5-10% or mild.