Every person in charge of any land must keep that land free from ragweeds, wild mustard, wild lettuce, wild parsley, common thistle, milkweed, poison ivy, and all other noxious weeds. The person in charge must destroy any noxious weeds on the land by:spraying with a chemical compound approved by and applied in accordance with the requirements of the United States Environmental Protection Agency; cutting and removal; digging under; or any other method that the Commissioner approves. City Code, 1976/83, art. 11, §161(2nd cl.) Ord. 99-548