Where and when was Agent Orange used in Vietnam?
Between 1961 and 1971, the U.S. military sprayed more than 19 million gallons of herbicides in South Vietnam for defoliation and crop destruction. They used several types and combinations of chemicals, identified by the color of the stripe on the storage drums. The most common was Agent Orange, which was sprayed from January 1965 to April 1970. Some of the herbicides used in the early years contained greater concentrations of dioxin. Spraying occurred in all 4 military zones of Vietnam. Heavily sprayed areas included inland forests near the demarcation zone; inland forests at the junction of the borders of Cambodia, Laos, and South Vietnam; inland forests north and northwest of Saigon; mangrove forests on the southernmost peninsula of Vietnam; and mangrove forests along major shipping channels southeast of Saigon.
