The proper ratio for mixing Roundup Concentrate is 3 ounces of product to 1 gallon of water. A 32-ounce bottle of Roundup Super Concetrate can make up to 23 gallons of spray.
The ratio of Roundup weed killer in concetrate form varies due to a number of different factors:
- Whether the product is in liquid or powder form
- Whether the product is regular, super, or professional grade
- How much area needs to be covered
Further, different concentrations of Roundup may be required, depending on the weed type to be treated. It is important that users of any Roundup product carefully read the directions for diluting or mixing the product before applying it to affected areas. For example, while regular Roundup Concentrate is mixed three ounces to one gallon, Roundup Pro can be used with anywhere from .8 to 7.2 ounces to one gallon.