Lawn - Knowledgebase Question

Loudon, Te
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Question by bfind
August 24, 2010
My yard is being over run with what some call Chick weed or nut grass. Very fast growning and makes the lawn looked unmowed within a couple of days.

Answer from NGA
August 24, 2010
Your first order of business is to have the weed identified so you can use the proper herbicide - not all weed killers are effective against all weeds. To further complicate matters, not all herbicides are safe to use on all types of turfgrasses so you'll need to have your lawn identified, as well. Ortho's Chickeweed and Clover Control will take care of chickweed without harming most lawns, but read the label to make sure your turf type is listed as safe to use the product on.

Nutsedge is a water-loving relative of reeds and its appearance in a lawn is often a sign of overwatering or poor drainage. Correct these problems to help control it. Nutsedge becomes a persistent weed once it gets a start spreading underground by rhizomes, as well as small nut-like tubers that establish new plants when you pull out the main plant. The best organic method is to continue to pull the plants, every 2-3 days, removing every visible crown or stem. If you pull them out as soon as they are visible, the plants will use up all their underground stored carbohydrates as they try to grow new aboveground stems. The more you pull them, the more they use up their energy reserves. Eventually, you get ahead and the stand of weeds dies out. If you slip up and allow some of the crowns and stems to reach full size, they again start storing food and energy to return. If you choose to use an herbicide, you might consider glyphosate sold under several brand labels. It can be used on nutsedge with good success, but it will also kill your lawn if just sprayed over the top. Some people paint the glyphosate by hand onto the nutsedge plants which will kill the stems and stun the roots. You must be persistent as new stems will keep popping up until the roots run out of stored energy. There are other products available labeled specifically for control of nutsedge in lawns such as Sledgehammer, but they will take multiple applications as well. With any herbicide, read the label carefully for instructions and application rates.

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