Answer: A pre-emergent herbicide can be either a chemical substance or an organic matter which is applied ?pre? growing season to prevent broad leaf weed seeds from germinating.
Pre-emergent weed control products do not killkill weeds themselves, they simply prevent the new weed seeds from germinating.
Concern Weed Prevention Plus is a product that contains corn gluten, a natural substance produced by corn that prevents surrounding weeds from growing. It is packaged as an organic pre-emergent herbicide that selectively targets broadleaf weeds. Other brands to look for include DynaWeed, Earth Friendly, Safe Earth Natural Weed Control and W.O.W.
Best wishes with your lawn!
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