Corn Gluten for Crabgrass...Yay or Nay?
Corn gluten is often recommended as an organic crabgrass pre-emergent, but studies on its effectiveness have been mixed. Precise timing is key to its success. Since corn gluten is an expensive treatment that can be hard to get right, we generally do not recommend it.
What to do instead? The best way to get rid of crabgrass organically is to crowd it out with healthy turf. Crabgrass is an annual that takes advantage of bare spots on your lawn in warm weather. The best time to establish a thick, lush lawn is in fall, but you can also overseed bare spots now so that new crabgrass does not have a sunny spot to sprout in summer.
Before you tackle your crabgrass issue, take a look at where the crabgrass is growing—you might learn something about your soil that will help you prevent it from coming back again.
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