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How To Control Green Kyllinga

In warmer areas of the country, there is an irritating invasive species of plant which reemerges on vegetable gardens and turf that can be frustrating for a landscaper or gardener to get rid of. One such frustrating invader is a type of sedge known as green kyllinga (or simply “kyllinga”). 

In cases such as this infesting prolific plant, manual methods such as mowing or pulling weeds may not be enough to eliminate the problem. It may be wise to look into a chemical means of control which Solutions Pest & Lawn has a variety of options in the form of herbicides.

Of course when it comes to tackling green kyllinga via chemical mean, you shouldn't just grab a random herbicide and begin spraying your lawn all willy nilly and hope for the best. You need to first equip yourself with knowledge about green kyllinga and what type of environments and conditions this weed enjoys as well as which herbicides it has a weakness against. Then and only then, can you approach green kyllinga control with confidence.

On this page you will learn a little bit about the invasive green kyllinga weed and get tips and product recommendations on how to get rid of the invader. You can also shop for products which specifically target green kyllinga to remove the weed and help keep your lawn looking its best.

Browse our top recommended products for green kyllinga control below and then scroll further to learn more information about green kyllinga which will help you in your mission to get it off your property.


How To Get Rid of Green Kyllinga: 4 Step Process

Controlling green kyllinga doesn't have to be complicated. If you know the right techniques and have the right chemicals in your arsenal, control can be much easier. That's where we can help by sharing with you our simple to execute 4 Step Solution and by giving you our top recommendations of selective and non-selective herbicides that will get the job done. Follow these directions and you will have a lawn to be proud of once again.


Step 1: Identification - As we mentioned earlier, green kyllinga can often be mistaken for another sedge or weed. Proper identification is crucial when it comes to weed control because if you don't know what weed you are dealing with and decided to purchase a herbicide to treat the weed, you may get a weed killer that isn't labeled for the green kyllinga and this will leave you with disappointing results and a lighter wallet due to the money you just wasted. No one likes throwing their money away so make sure you ID the weed you see correctly.


What makes green kyllinga different from sedges is its shiny green ridged leaves and lack of ligule and auricles. When they mature they make little nutsedge like seedheads. A group of three long leaflike structures (bracts) stick out from the stalk beneath the flower head. There are thirty to seventy-five spikelets within each flower head, each one capable of producing one seed. They are known to form large mattes wherever they have established.


If you have trouble identifying your problem weed as green kyllinga, send us a photo at identification@solutionsstores.com and we can help you identify it properly as well as give you instructions on controlling it.


Step 2: Inspection. Once you have identified the weed you are dealing with as green kyllinga, you can then move forward to inspecting your yard to see how severe of an infestation you have. Make observations in regards to where it is growing and where it is the most saturated. Kyllinga infestations are usually an indicator of chronically excessive soil wetness, which should always be addressed as part of an overall treatment program. Kyllinga is a perennial which means they grow all summer and from spring to fall so they grow all year round and stay dormant in the winter time.


Once you have an idea of how much of a problem green kyllinga is on your lawn or garden, you can then move on to control.


Step 3: Control. When they are young, they can be confused with some of the other sedge members of their family. Rototilling them is not a great way to address them as they're hair like roots will be dug up and spread out and will also disperse their seeds. Hoeing kyllinga also disturbs their roots and encourages more root hairs to grow so the best method of control is chemical.


Select a herbicide that is best to treat the particular type of grassy weed you have. For green kyllinga, we recommend herbicides such as Sedgehammer Nutsedge Killer or MSM Turf Herbicide, or if you want to use a pre-emergent, apply Prodiamine 65 (Barricade Herbicide).


Using the selected herbicide, spot treat weeds using a small pressure sprayer. If you have larger patches we recommend using a 1 or 2 gallon tank sprayer or even a tank sprayer if the weeds on your lawn have gotten severely out of control.


Step 4: Prevention. If you are able to eliminate green kyllinga from your lawn, you want to make sure the weed doesn't make a return. As noted earlier, green kyllinga thrives in soils that are excessively wet so you will need to address your drainage problem if you don't want kyllinga to make a comeback. Also, in the springtime, use a pre-emergent to spread over your lawn like Prodiamine. Timing is very important. The treatment prevents any dormant seeds which have remained on your lawn from germinating. If you wait too long, the seeds will sprout. Also, applying pre-emergent too early and the treatment may dissipate and late germinating seeds will sprout.


Check out our article: The Ideal Times To Use Pre-Emergent on Your Lawn


Learn More About Green Kyllinga

Green kyllinga (Kyllinga brevifolia) comes from the family of sedges and is rapidly becoming an increasingly common problem in the southeastern part of the United States.  Believed to be a native plant to Asia, Green kyllinga first were reported in the country about 50 years ago. In the last 10 to 15 years however it has developed into developed into a major problem for turfgrass and landscape managers. Green kyllinga is often mistaken as purple or yellow nutsedge, but its growth habits, reproduction, and morphology are different.

Kyllinga has narrow grasslike leaves and when left unmowed they can reach up to 15 inches in length. The weed has one to three dark green, glossy, flat, hairless leaves that on average range from 2-2/5 to 6 inches (6–15 cm) long. Flowering stalks of the kyllinga are triangular in cross-section and end in a globular, dense flower head consisting of green flowers. Kyllinga seeds are flat, oval and can reach about 3mm long. The seeds germinate between spring and summer.

The main problem with kyllinga is that they grow in the form of dense mats which can quickly take over a garden or lawn and be an eyesore. Kyllinga then makes little nutsedge seed heads which can make 5,000 seeds per year and they grow all year round before going dormant in the winter time. Pulling the weeds out or digging them out disperses the seeds. This also disturbs the roots and encourages more root hairs to grow so the best way to control them is chemicals.

Kyllinga is a not a typical weed homeowners are used to seeing since it's a relatively new nuisance, but it can spread like wildfire, ruining gardens as well as lawns. The weedy sedge tends to thrive in soil that remains wet for an excessively long periods of time and receives full sun, although it can manage to thrive in areas of partial shade.

Kyllinga is a crafty weed which has been reported to move its way from landscape beds to nearby turf with ease and usually goes under the radar until later in the  summer.

Green kyllinga seeds can be spread via mowing equipment and even by walking over it. It will stick to clothing and other materials that come in contact with it, taking it from property to property. Close mowing is also known to cause a kyllinga invasion as the lawn grass is unable to spread and compete.

Kyllinga also spreads through short rhizomes, or underground stems. That means even if you decide to pull up the weed, each node can still reproduce. While pre-emergent control is the preferred option, there are ways to deal with a problem area.

To be able to detect kyllinga on your lawn, you need to look closely for weeds that look similar to nutsedge but with less erect and smaller leaves. Infestations can form dense mats in a turfgrass stand. Kyllingas can persist under low mowing heights, and unlike yellow and purple nutsedge, these plants produce flowers even under regular mowing.


Better Safe Than Sorry: Equip Yourself With Protective Safety Equipment Before Spraying


Chemical Control Of Green Kyllinga

Chemical control of green kyllinga may be achieved with preemergent herbicides applied before the seeds germinate, with selective postemergent herbicides for established plants or with a combination of preemergent and postemergent herbicide treatments. The use of herbicides can be very effective if combined with cultural methods such as water management and exclusion of green kyllinga from turf and landscape areas.


Preemergent herbicides have been successful in limiting germination of green kyllinga seeds. These herbicides should be applied in spring before soil temperatures reach 60°F to limit germination in late spring and early summer. Preemergent materials that are effective include benefin, bensulide, dithiopyr, pendimethalin, and prodiamine.


Postemergent herbicides can limit growth of green kyllinga. Herbicide products available for green kyllinga and plants in the sedge family contain halosulfuron, imazosulfuron, MSMA, or trifloxysulfuron. Be sure to select a product that is safe for your existing turfgrass species. The best control has been obtained when halosulfuron is applied in two sequential applications. Make the second halosulfuron application when kyllinga plants show signs of recovering.


Have A Lawn Issue That Isn’t Listed on this Page? Check out Our Lawn Care Main Category!


Additional Tips and Suggestions For Controlling Green Kyllinga


  • * Due to surface tension, herbicide may often bead up on weeds and bounce off. We recommend using a surfactant and mixing it with your selected herbicide to see best results.




  • * To use herbicides safely and successfully, read the manufacturer's label carefully and follow directions. Application rates can vary based on the selected herbicide you are using.


  • * Herbicides can be harmful if you come in contact with it. Protect your eyes, skin, mouth and nose by wearing protective equipment any time you handle herbicide chemicals.

  • * For more detailed guides and demonstrations on how to use herbicides and remove other problem weeds, please check out our knowledge base or view our informative How-To Videos



Additional Resources On Green Kyllinga


Green Kyllinga Management Guidelines--UC IPM


Green Kyllinga | NC State Extension Publications




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