Nutsedge or nutgrass is technically not a grass, but it looks like one. It grows faster than regular turf grass, and sticks up like a bladed yellowish weed.
It can pop up both in garden beds and in the lawn. Nutsedge has a triangular stem and roots contain small bulbs or tubers that make fighting nutsedge very difficult.
Under optimum conditions, a network of nutsedge plants arising from one tuber can produce 100 or more tubers in about 100 days.
About 80–95 percent of the tubers are located within the top 6 inches of soil. However, tubers have been reported to be present as deep as 18 inches.
Once tubers form, they can remain viable in soils for at least two years if they retain moisture. They can survive even when soils are very dry for short periods. However, if tubers are brought to the soil surface for about one week under sunny conditions, they dry out and die.
Nutsedges are a problem in lawns because they grow faster, have a more upright growth habit, and are a lighter green color than most grass species. These features result in a nonuniform turf.
In gardens and landscapes, nutsedge will emerge through bark or rock mulches, in shrub plantings, and even in vegetable and flower beds throughout the growing season.
New infestations of nutsedge occur when tubers are moved from one area of your yard to another. This happens via lawn equipment, soil within plant containers, or among the roots of transplants. Be sure you check your containers and equipment.
Nutsedge thrives in wet soil and lots of sunlight. Having proper irrigation is the first step to preventing nutsedge from growing. No over-watering!
Glyphosate might work on the younger plant in which the tubers have not formed. Turf grass will absorb the glyphosate, preventing it from reaching mature nutsedge, and possibly damaging your turf grass.
The glyphosate is okay in gardens because the nutsedge is easier to get to and more isolated. Exposure to garden plants, compared to turf grass, is less likely to cause unwanted damage.
Then mulch or plant desired plants to keep nutsedge and other weeds from elbowing their way back into the bed.
Nutsedge can be a battle of attrition. For a really bad nutsedge invasion in a lawn, it may be easier to kill off everything with glyphosate and reseed or re-sod your lawn from scratch.
Ryno Lawn Care is here to help manage your lawn and landscape. Call now for your free consultation.
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