Root-knot nematodes invade crop roots, form galls, and steal plant nutrients  causing 125 billion dollars of crop loss worldwide (Ara and Hossain, 2011). Biological control methods such as compost, yard waste, and  organic fertilizers can release nematicidal compounds as  they  decompose (McSorley, 2011). Coffee grounds are high in nitrogen, similar to other organic amendments that reduce galling from nematodes (Cooperband, 2002). When decomposing, coffee grounds release potentially-nematicidal compounds such as caffeine, tannins, and  polyphenols (Yamane et al, 2014).