Early spring or late fall treatments of 2,6-dichlorobenzonitrile (dichlobenil) were effective for the control of several annual and perennial sedges, grasses, and broadleaf weeds in cranberry bogs. Isopropyl N-(3-chlorophenyl) carbamate (CIPC) 2,4-dichlorophenoxyacetic acid 2,4-D and 2-chloro-4,6-bis (ethylamino)-s-triazine (simazine) as spring applications were less effective than dichlobenil for the wide spectrum of weeds encountered. Single spring applications of as much as 4 lb/A of dichlobenil, 6 lb/A of 2,4-D, 24 lb/A of CIPC, and 2 lb/A of simazine were tolerated by the cranberry vines. Dichlobenil at 4 and 6 lb/A caused reductions in upright growth and fruit size. Keeping quality of mature fruit was not adversely affected by herbicidal rates of any of the materials.