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Does Corn Gluten Meal Prevent Weeds From Growing?

Publish Data: March 12, 2021

by Mumtahina Piya

If you want to know whether corn gluten meal prevents weeds from growing or not, you have chosen the right article for it. Here I am going to share my knowledge on the matter of corn gluten meals working on weeds prevention or not. Hope your doubts will get cleared. So, our main concern is “Does corn gluten meal prevent weeds from growing?” Corn gluten meal will not kill mature weeds or plants. Corn gluten meal can kill weed seeds and can prevent weeds from growing. Killing weeds or preventing weeds growth also depends on how you use it and on what kind of weeds you use it. Let’s dig in a little deeper.
Does corn gluten meal prevent weeds from growing

Corn gluten meal can prevent weeds growth

Basically, the invention of corn gluten meal as a weeds preventer was an accident. Researchers at Lowa university invented that corn gluten meal can use as a weed preventer while doing their research on the disease. Later researchers at Oregon State University stated that corn gluten meal can’t prevent weeds from growing. So how does the corn gluten meal prevent weeds from growing? Let’s check. Mainly corn gluten meal is the by-product of corn wet milling. It is a natural pre-emergent herbicide in the replacement of chemical pre-emergent herbicides. According to the researchers at Lowa University, corn gluten meal can prevent the growth of grass and other seeds like crabgrass, chickweed, etc. But what about the research of Oregon University, right? It is important for you to know that corn gluten meal is only effective against seeds and not against the plants that are mature. Probably that’s why the researchers of Oregon University failed in their research. Cornmeal gluten having at least 60% the protein in it are more effective for weeds. So, if you use plain cornmeal products, it will not be effective. Weeds like crabgrass, purslane, foxtail, and pigweed can be killed by it. Along with mature plants, corn gluten meal cannot kill perennial weeds also, like, dandelions, quack grass, plantain, etc. They will come back again and again as their roots survive under the soil during the cold season. But corn gluten meal can kill the seeds from these weeds that they shed during summer and also with continuous use of corn gluten meal these weeds can be killed gradually.

Usage of corn gluten meal in your garden

Now you know that corn gluten meal is effective for preventing weeds growth. But to vanish the weeds from your garden, you also have to know the usage of it in your garden to get the best result. So let’s quickly know the procedure. Corn gluten meal will not do any harm to your existing plants so you can use it without any worries. Corn gluten meal comes both in granular and powdered forms. The granular one is easy to use but less effective. You have to take a certain amount of corn gluten meal for a specific coverage area and spread it on the area you need to cover, like 20 pounds of cornmeal for 1000 yards of lawn. After spreading you need to water the space lightly so that the oils can be activated. If the procedure is followed accordingly, the effects will last up to 5 to 6 weeks and after that, the corn gluten meal has to apply again in the same procedure. Before you apply the corn gluten meal, be sure to follow the following instructions:
  • Follow the instructions on the package
  • Apply before weeds start to grow
  • The best time for applying is spring
Be cautious while using corn gluten meal in the flowers and vegetable bed where the seeds are recently sowed. If you apply corn gluten meal to the recently sowed seeds, it can prevent the growth of your desired plant. Besides this, you have to be careful while buying corn gluten meals. Many of the products shown in the market are basically corn gluten feed or distillers grain for corn gluten meal. These products will not be effective. So, make sure you are buying the corn gluten meal that contains at least 60 percent of protein and has been wet milled. weeds img

Don’t confuse cornmeal and corn gluten meal

Most people get confused between cornmeal and corn gluten meal. The cornmeal we eat and the corn gluten meal we use in the garden are two different things. The cornmeal we eat is a product that comes from ground-up corn kernels whereas the corn gluten meal is a by-product of the wet milling process of making cornmeal. Corn gluten meal contains high levels of protein, nitrogen, and oils.

Benefits and problems of corn gluten meal

Now as you are applying corn gluten meal in your garden, you certainly want to know about some other benefits of it.
  • Corn gluten meal can also be used to kill ants. You can put some of it at the place where you see ants. The ants can’t digest this gluten so as a result they will starve to death and the number of ants will reduce in your garden.
  • The cellulose in the corn gluten meal removes the excess phosphorus in water and balances the water chemistry in this way, the corn gluten meal can kill algae. Moreover, the carbon in cornmeal helps the beneficial bacteria to grow in the water.
The only problem noticed with using corn gluten meal in the garden is that it can attract rodents. Placing some of the meal in a coffee can and adding some cayenne pepper in it can prevent mice and voles coming to your garden even after the use of corn gluten meal.


Finally, let’s draw a summary of my discussion. Corn gluten meal that is different from cornmeal is effective for preventing weeds from taking root and stopping the growth of weed seeds. It is not effective for mature plants or perennial weeds. Besides, it can kill the seeds of desired flowers or vegetable plants if apply to them. So while applying the corn gluten meal you need to be careful that you are applying it before sowing seeds. However, corn gluten meal can be useful natural prevention for preventing springtime weeds without the usage of harmful chemicals. Hope you could understand “does corn gluten meal prevent weeds from growing”. Have a good day and let me know if the cornmeal gluten has been effective enough for your garden or not!