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How Much Roundup Per Gallon of Water?

How Much Roundup Per Gallon of Water?

As a homeowner, have you ever wondered “how much roundup per gallon of water” you need for your lawn? Look no further! We’ll go over exactly how much water you’ll need and how to properly use it below.

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Roundup vs Water Mixture

The amount of Roundup per gallon of water you need depends on the type of weeds you want to kill and the Roundup product being used.

There are various options to choose from, but generally, you can do a simple calculation to find the answer. To kill seeding weeds, mix 2/3 ounces of Roundup Pro with 1 gallon of water.

But to protect crops and kill broadleaf weeds, the answer gets a little more complex. Either way, whenever the weeds come, you always want to get them away as soon as you can.

While you can just pull them out by hand, it can take up far too much time and effort. Roundup simplifies this process.

Read on to learn more about the types of weed killers and how much Roundup per gallon of water you need to use.

How Much Roundup Per Gallon of Water

For a piece on how much Roundup per gallon of water, a man spraying Roundup on weeds in his lawn

Mabeline72/Shutterstock

As we said above, the correct ratio will depends on the kind of Roundup you are using and the type of weeds you are killing.

Roundup Concentrate Plus

With Roundup Weed and Grass Killer Concentrate Plus, you’ll likely be spraying near your garden or trees. If the weeds are small, light, and thin, then mix about 3 ounces of Roundup per one gallon of water.

However, if you need to kill some stronger perennial weeds or clear them for a gardening plot, then you should mix 6 ounces, or 12 tablespoons, of Roundup herbicide per gallon of water.

Roundup Super Concentrate

If you’re using Roundup Weed and Grass Killer Super Concentrate, then you should mix about 1.5 ounces, or 3 tablespoons, of Roundup per gallon of water. This should take care of most small weeds.

For medium-sized weeds or vines, mix 2.5 ounces for every gallon of water. Remember, more concentrate makes the mixture more potent, allowing it to kill bigger weeds.

Roundup Pro

Roundup Pro is ideal for perennial weeds that have seeded and started to form buds. If you are killing weeds that are currently seedling, then mix about 2/3 of an ounce of herbicide per gallon of water.

For more dense weeds, use 2 ounces of herbicide per one gallon of water. However, if you need to kill woody vines or thick brush, you may have to use up to 13 ounces of Roundup Pro herbicide per one gallon of water to fully eradicate them.

Frequently Asked Questions

How much Roundup do I need per 10 acres?

For larger plots of land, you’ll need to know how much Roundup you need per acre. Roundup recommends using up to 44 gallons per acre. The volume of the spray should increase through that range to insure you kill all the weeds.

Generally, one gallon of a Roundup solution covers about 1000 square feet. If you multiply the number of acres by 10, you will need roughly 440 gallons of Roundup solution per acre.

How much Roundup do I use for 5 gallons of water?

The following ratios for Roundup are based on five gallons of water:

  • Roundup Concentrate Pro: You will need between 15 and 30 ounces per 5 gallons of water.
  • Roundup Super Concentrate: You will need between 7.5 ounces and 12.5 ounces per 5 gallons of water.
  • Roundup Pro: You will need to use 65 ounces per 5 gallons of water to eradicate thick bushes and dense weeds in your field or garden.

Are there any other ways I can kill my weeds?

There are many other natural remedies to kill your weeds without using Roundup. These include:

  • Dish soap
  • Corn gluten meal
  • Concentrated vinegar
  • Newspaper
  • Boiling water
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So, How Much Roundup Do I Need Per Gallon of Water?

The Roundup to water mix isn’t a cut and dry answer. If you’re using a concentrate, that ratio decreases. But for most homeowners using Roundup Pro, 2/3 ounces of Roundup Pro per gallon of water is a good starting point.