How to Identify and Control Nutsedge in your Lawn - LawnPro

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How to Identify and Control Nutsedge in your Lawn

June 28, 2022


Nutsedge is an aggressive and persistent weed that commonly infests lawns, flower gardens, and home landscapes. Nutsedge often escapes control because they’re not like weed grasses targeted by most herbicides. By understanding the basics of nutsedge and effective treatment, you can kill and control these difficult, perennial lawn weeds

Identifying Nutsedge

Nutsedge usually comes out during periods of rapid summer growth as it surpasses other lawn grasses that are struggling for water and nutrients. The two types of nutsedge, yellow and purple, clearly stand out against green turf. This weed produces distinctive spiky-flower clusters that are either yellow-brown or purple-brown according to the type of nutsedge. 

Another key identifier is their triangular stems. Other grasses have round stems, but nutsedge forms a “V” shape and has a distinct center rib. These weeds often start in moist, poorly drained areas on your lawn. Their extensive root systems may reach up to four feet deep and can then tolerate drought. 

How Nutsedge Spreads

There are several ways that nutsedge spreads and reproduces. One way is the plants can flower and release seeds that germinate and grow into new plants. These weeds also spread through underground stems that send up shoots to become plants. However, the most fruitful way nutsedge reproduces is through underground tubers known as “nutlets”.

Purple nutsedge produces rows of nutlet tubers along their length, whereas yellow nutsedge only produces single nutlets. Most nutlets form within six to ten inches of the surface but can reach up to eighteen inches deep. Nutlets may survive hidden in the soil for up to ten years before coming up to produce new plants. These depths protect nutlets from the effects of many common herbicides. 

Effectively Preventing and Controlling Nutsedge 

By practicing these 5 good lawn-care basics, you can actively protect against nutsedge invasions: 

  1. Healthy, vigorous grass is an excellent defense against yellow and purple nutsedge. 
  2. Correcting poorly drained areas and avoid overwatering your lawn. 
  3. Aerating your lawn as needed as it thrives in compacted soil.
  4. Mowing your lawn at the recommended height for your grass type
  5. Treating your lawn with an herbicide specifically made to fight against nutsedge 

If you are experiencing an invasion of this aggressive weed, give us a call at LawnPro of Murfreesboro today for treatment!