Question: how much hdx per gallon?
Answer: Use 1.5 ounces (3 tablespoons) of concentrate in 1 gallon of water for general weed control. For tougher weed control of perennials or brush, mix 2.5 ounces (5 tablespoons) in 1 gallon of water. One gallon of ready-to-use equivalent will cover 300 square feet.