Turf Care

How to Get Rid of Nutsedge: Why Pulling Makes It Worse

Last updated: October 30, 2025

Nutsedge is not a grass — it is a sedge that spreads by underground tubers, and pulling it triggers more tubers to sprout. Here's how to identify it and which herbicides actually work.

JJames Martinez

October 30, 2025

Yellow nutsedge growing above surrounding lawn grass showing lighter green color and triangular stems — — Image © PlantReference.org 2026

Quick Answer

Do not pull nutsedge — it triggers more tubers to sprout. Apply halosulfuron (SedgeHammer) or sulfentrazone to actively growing plants. Fix wet soil conditions to prevent return.

TL;DR

Nutsedge is a sedge, not a grass — it has a triangular stem ("sedges have edges") and spreads by underground tubers (nutlets) that survive years in the soil. Pulling nutsedge triggers dormant tubers to sprout, often producing 3-5 new plants for every one removed. The only effective control is selective herbicide: halosulfuron (SedgeHammer) or sulfentrazone (Dismiss). Long-term prevention requires fixing the wet soil conditions nutsedge exploits — it thrives where lawns are overwatered or poorly drained.

Frequently Asked Questions

Can I kill nutsedge by pulling it?

No — pulling nutsedge makes the problem worse. When you pull the stem, it breaks at soil level while the root system, rhizomes, and tubers remain underground. The removal triggers dormant tubers to sprout, typically producing 3-5 new plants within 1-2 weeks for every one pulled. Use halosulfuron (SedgeHammer) or sulfentrazone herbicide instead.

Will regular weed killer work on nutsedge?

No. Standard broadleaf herbicides (2,4-D, dicamba) do not affect nutsedge because it is a sedge, not a broadleaf weed. Grass-selective herbicides also miss it because it is not a grass. You need a sedge-specific herbicide — halosulfuron (SedgeHammer) or sulfentrazone (Dismiss) are the two effective options.

How do I identify nutsedge in my lawn?

The fastest test is the triangular stem check: roll the stem between your fingers and feel for three distinct edges. Grass stems are round. Nutsedge also grows faster than surrounding turf — it is visibly taller within 2-3 days of mowing. Leaves are glossy, waxy, and lighter yellow-green than grass. "Sedges have edges" is the turf science mnemonic.

Why does nutsedge keep coming back every year?

Nutsedge tubers survive up to 10 years in the soil, and each plant produces hundreds of new tubers per season. Even after herbicide kills all visible plants, dormant tubers in the soil bank sprout in subsequent years. Expect 2-3 years of consistent treatment to deplete the tuber bank. Fix wet soil conditions to prevent recolonization — nutsedge thrives where lawns are overwatered or poorly drained.

Is nutsedge harmful to my lawn?

Nutsedge itself does not directly damage turf grass, but it outcompetes grass for water, nutrients, and sunlight. Dense nutsedge colonies shade and thin the surrounding turf. Its fast growth rate means it sticks up above the mowed surface within days, creating an uneven appearance. Left uncontrolled, nutsedge colonies expand each year and eventually dominate wet areas of the lawn.

NEW PLANT DAILY

Think you know your plants?

Test your botanical knowledge with a new plant identification challenge every day. Build your streak, learn fascinating plant facts, and become a plant identification expert!

Build your streak

One chance per day

Learn as you play

Free account required • Takes less than 30 seconds

Tagged with

#nutsedge removal #how to get rid of nutsedge #yellow nutsedge #purple nutsedge #sedge weed lawn #halosulfuron SedgeHammer #nutsedge herbicide #nutsedge identification #sedges have edges #nutsedge tubers

Written By

James Martinez

James is a lawn care professional in Dallas who runs a small residential maintenance company. He started mowing lawns as a teenager and worked his way up to running crews for a large landscaping firm before going out on his own. James specializes in warm-season turf grasses—Bermuda, St. Augustine, and Zoysia—and knows how to keep a lawn alive through Texas summers without wasting water. He's also experienced with the transition zone challenges that Dallas faces, where warm-season and cool-season grasses overlap. James takes a practical, science-informed approach to lawn care and pushes back on the idea that a good lawn requires heavy chemical inputs.