Korean varieties will produce around 300 pounds per acre. Sericea lespedeza will produce from 200 to 400 pounds of seed per acre. Pests Weeds are a pest in lespedeza, especially the annual lespedeza varieties. Normally, grassy weeds are not a major problem since you can control the grassy weeds. Grassy weeds can even be consumed as forage by good grazing and hay management.
Broadleaf weeds can become a problem.
Do not spray before lespedeza reaches a height of at least 2 inches, and after it begins to form buds. Several diseases, including nematodes, attack lespedezas. The major recommended control is using resistant varieties, as discussed earlier. The major insects significantly affecting lespedeza in Mississippi are fall armyworms and grasshoppers. The fall armyworm is the most destructive.