However, corn gluten meal is also an organic, pre-emergent herbicide that can make quick work of troublesome crabgrass and other weeds in lawns and gardens. As a pre-emergent herbicide ...

Gifford tells Southern Living the pre-emergent she is most familiar with is Corn Gluten Meal (CGM), because it’s what she used to plant her grass plugs. CGM is a natural byproduct of corn ...