Does Cornmeal Kill Weeds?

Oct 11, 2023

Welcome to Friendly Organics Canada, your go-to destination for all things organic. In this article, we will delve into the question: "Does cornmeal kill weeds?" We will explore the effectiveness of cornmeal as a natural weed control method and provide you with valuable insights. Our specialty food, health market, and organic store offerings are designed to help you maintain a healthy, weed-free environment without the need for harsh chemicals.

The Science behind Cornmeal as a Weed Killer

Over the years, many gardeners and organic enthusiasts have praised cornmeal as an effective weed suppressant. Cornmeal contains a natural compound called allelopathic chemical, which inhibits weed seed germination. When applied correctly, cornmeal forms a barrier on the soil's surface, preventing weed seeds from taking root and growing.

How to Use Cornmeal for Weed Control

Using cornmeal to control weeds is a simple and eco-friendly option. Here's how you can incorporate cornmeal into your weed management routine:

1. Preparing the Soil

Before applying cornmeal, prepare the soil by removing existing weeds and debris. Rake the area to create a smooth surface for even distribution of cornmeal.

2. Choosing the Right Cornmeal

Not all cornmeal is suitable for weed control. It is crucial to select organic non-GMO cornmeal. Friendly Organics Canada offers a variety of certified organic cornmeal options specially curated for effective weed suppression.

3. Applying Cornmeal

Spread a layer of cornmeal evenly over the soil surface, ensuring complete coverage. Use approximately 2-3 pounds of cornmeal per 100 square feet. Lightly water the area to activate the allelopathic properties of cornmeal.

4. Reapplication and Timing

Cornmeal's effectiveness may diminish over time, especially after heavy rainfall or watering. It is recommended to reapply cornmeal every few months to maintain its weed-suppressing properties. For optimal results, apply cornmeal in the early spring or fall, before weed seeds start to germinate.

Benefits of Using Cornmeal for Weed Control

By using cornmeal as your natural weed control method, you can enjoy several benefits:

  • Environmentally Friendly: Cornmeal offers a non-toxic and environmentally safe alternative to chemical herbicides, keeping your garden or farm free from harmful substances.
  • Promotes Soil Health: As cornmeal decomposes over time, it adds organic matter to the soil, improving its structure and fertility.
  • Cost-effective: Cornmeal is a cost-effective solution as it can be purchased in bulk and applied in generous quantities without breaking the bank.
  • Low Maintenance: Once applied, cornmeal requires minimal upkeep, allowing you to save time and effort on weed control.

Other Natural Weed Control Methods

In addition to cornmeal, Friendly Organics Canada provides a range of other natural weed control methods and specialty food products that can help you maintain a weed-free space:

  • Vinegar Weed Killer: Our specialty vinegar-based herbicides effectively target and kill weeds.
  • Mulching: Organic mulches such as wood chips, straw, or leaves create a protective barrier to prevent weed growth.
  • Weed-Blocking Fabric: Biodegradable weed-blocking fabric suppresses weed growth while allowing water and nutrients to reach desired plants.
  • Weed Torch: Our propane-powered weed torch offers a quick and efficient way to eliminate weeds without the need for chemicals.


Does cornmeal kill weeds? The answer is a resounding yes! Friendly Organics Canada is proud to offer a wide range of specialty food, health market, and organic store products to help you effectively control weeds using the power of natural and safe methods. Incorporate cornmeal and other natural weed control solutions into your routine for a healthy and vibrant weed-free environment. Visit for more information and to explore our full range of products.

Marilyn Crawford
Great idea! 🌽🌱 Cornmeal is an organic way to fight those stubborn weeds in your garden!
Nov 8, 2023
Laura Herrera
I'm going to give cornmeal a try in my garden! Hopefully, it'll keep those stubborn weeds at bay! 🌽🌱
Oct 30, 2023
Byron Smith
💚 I've tried cornmeal as a weed killer before and it worked like a charm! No more pesky weeds in my garden! 🌿
Oct 16, 2023
Sujit Mallick
🌽 No more pesky weeds! 🌱
Oct 13, 2023