Answer: Corn gluten meal pre-emergence products inhibit seed sprouting which is an efficient way to keep weeds from sprouting in lawns and flower beds. Corn gluten meal is a by-product of corn processing and therefore natural and eco-friendly. It won't kill existing weeds but if you pull the weeds and then apply a pre-emergent, it will keep new weeds from sprouting. Timing is important and in your gardening region it is suggested you first apply a pre-emergent in late February. You can pull the weeds now and apply a pre-emergent.
There are a number of corn gluten based products on the market. Here's a short list: (All Star Trading) Safe Lawn; (Collingwood Ethanol Value Products UCL) Amaizely Green; (Down To Earth Distributors) Corn Weed Blocker; (Fertrell Company) Weed Ban; (Gardens Alive!) WOW!; Manning Agricultural Center, Inc. (Preen Vegetable Garden Weed Preventer); (R-W Milling Company) Gard'n-Wise Organics; (Scotts Company) Scotts Turf Builder and Lawn Pro; (Soil Technologies Corp.) Dynaweed; Wilbur-Ellis Company) A-Maize-N; (Woodstream Corp.) CONCERN Weed Prevention Plus. I'm sure Home Depot carries Scott's and Concern and may have the others, as well.
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