We are trying to find a healthy weed pre-emergent. Can we just use corn meal or does it have to be corn meal gluten? Is there a difference? Our home is gluten free due to allergies and I wouldn't want to spray our entire yard with gluten if we don't have to! Thank you for your time, Tanya
Weed Killer Corn Meal and Corn Gluten
Certified GKH Gardening Expert
You will need to use the Corn Gluten to have success at using it as a pre-emergent.
It is the gluten meal's proteins that inhibit seed formation.
It works by stopping root formation and over time will break down to a nitrogen source.
Corn Meal is flour that is ground down from corn. It can be used as a fungicide in the garden and also will break down to an organic nutrient source.