Corn Gluten Meal as an Organic Herbicide Solution (Page 2 ) | February 19, 2024

• Corn gluten meal (Ensure you’re using CGM and not regular cornmeal, as they are not the same.)
• Garden spreader or a hand-held shaker
• Watering can or garden hose

Step-by-Step Application:

1. Timing: Apply CGM to your garden in early spring, before weeds begin to germinate. Timing is crucial as CGM is a pre-emergent herbicide and will not affect already established weeds.
2. Preparation: Ensure the garden area is cleared of existing weeds. CGM works best on bare soil or around established plants where you do not plan to seed new plants immediately.
3. Application Rate: Spread the CGM evenly over your garden soil at the rate of about 20 pounds per 1,000 square feet. Use a garden spreader for large areas or a hand-held shaker for smaller garden beds.
4. Watering: After applying CGM, water the area lightly. Moisture activates the herbicidal properties of CGM, helping it adhere to the soil surface.
5. Wait Before Planting: If you plan to sow seeds or plant seedlings, wait at least 4-6 weeks after applying CGM. This gives enough time for the herbicidal effect to diminish, ensuring it doesn’t harm your new plants.

Considerations and Limitations

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