How Cornmeal Can Effectively Kill Weeds

Nov 22, 2023

The Benefits of Using Cornmeal as a Natural Weed Killer

Cornmeal, an ingredient commonly found in kitchens, is not only a versatile and delicious cooking staple, but it can also be used as a natural weed killer in your garden. If you're looking for an eco-friendly and organic solution to control weeds, cornmeal might just be the answer you've been searching for. In this article, we will explore the various benefits and methods of using cornmeal to effectively eliminate weeds.

Understanding How Cornmeal Works as a Weed Killer

Cornmeal contains a natural compound called corn gluten meal (CGM), which inhibits seed germination. When applied to the soil, CGM prevents weed seeds from sprouting, effectively halting the growth of unwanted plants. Unlike synthetic herbicides, cornmeal poses no harm to the environment, making it a safe and sustainable choice for weed control.

Applying Cornmeal in Your Garden

Now that you understand the science behind cornmeal's weed-killing properties, let's discuss how you can use it effectively in your garden. Here are step-by-step instructions:

Step 1: Preparing the Soil

Before applying cornmeal, it's essential to prepare the soil by removing any existing weeds manually. This will ensure that the CGM can target new weed seeds without any interference from existing growth. Clear the area of debris and make sure the soil is relatively loose and ready for application.

Step 2: Choosing the Right Type of Cornmeal

When using cornmeal to kill weeds, it's crucial to select a high-quality organic cornmeal. Look for non-GMO options to ensure that you're using the most natural and environmentally friendly product. Friendly Organics Canada offers a wide range of premium organic cornmeal options suitable for weed control.

Step 3: Applying the Cornmeal

Generously sprinkle the cornmeal over the soil surface, targeting areas where weed growth is most prevalent. It's recommended to apply about two pounds of cornmeal per 100 square feet to ensure effective weed prevention. Make sure to spread the cornmeal evenly to maximize its effectiveness.

Step 4: Watering the Area

To activate the cornmeal and facilitate its weed-suppressing properties, water the treated area thoroughly. This will allow the CGM to penetrate the soil, creating a barrier against weed seeds and inhibiting their growth. Watering the area after application also helps to prevent the cornmeal from blowing away or being washed away by rain.

Step 5: Maintaining Weed-Free Environment

While cornmeal is highly effective in preventing weed growth, some persistent weeds might still find their way into your garden. It's necessary to inspect the area regularly and remove any weeds that manage to sprout. By staying vigilant and maintaining a weed-free environment, you can maximize the benefits of cornmeal as a natural weed killer.

Other Benefits of Using Cornmeal in Your Garden

Cornmeal not only acts as a potent weed killer but also provides several additional benefits to your garden. Let's explore some of the advantages:

Promotes Soil Health

Cornmeal contains essential nutrients that can enrich the soil and improve its overall health. It acts as a natural fertilizer, promoting the growth of beneficial microorganisms and enhancing soil structure. By using cornmeal, you're not only eliminating weeds but also nurturing the health of your garden soil.

Cost-Effective Solution

In comparison to chemical herbicides, cornmeal is an affordable and cost-effective weed control option. It can be purchased in bulk and applied as needed, providing long-term weed prevention without breaking the bank. Friendly Organics Canada offers competitive prices on their range of high-quality organic cornmeal products, ensuring that you can maintain a weed-free garden without emptying your wallet.

Safety for Humans and Animals

Unlike synthetic herbicides, cornmeal does not pose risks to human health or the well-being of animals. It's non-toxic and safe to use around children and pets, allowing you to enjoy a worry-free gardening experience. Cornmeal offers a natural alternative that you can feel good about, knowing that you're protecting both your garden and the environment.


With its natural weed-controlling properties, cornmeal is a valuable asset for any gardener seeking an effective and eco-friendly solution. By inhibiting weed seed germination, providing additional soil benefits, and ensuring safety for humans and animals, cornmeal proves itself as a trustworthy tool in maintaining a thriving and weed-free garden. Get started with your weed control journey today by choosing high-quality organic cornmeal from Friendly Organics Canada.

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