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What Is Nutsedge?

Category: Lawn Care | Posted by: White Oak Gardens

Nutsedge is a perennial weed in the Cyperaceae family — a group of grass-like plants that love moist soil. The most common type found in lawns and gardens is yellow nutsedge (Cyperus esculentus).

Despite its grassy appearance, nutsedge is not a true grass. It features:

  • Triangular stems
  • Glossy, bright green leaves
  • Underground tubers (nutlets) that make it tough to kill

Why Is Nutsedge a Problem?

  • Grows Fast: Outpaces lawn grass during hot summer months
  • Hard to Kill: Underground nutlets regenerate new plants after mowing or cutting
  • Spreads Quickly: One plant can produce hundreds of offspring through rhizomes and tubers
  • Ugly in Turf: It disrupts lawn uniformity with tall, coarse, bright green growth

How to Identify Nutsedge

Watch for:
  • Bright, waxy leaves that grow upright
  • Triangular stems (roll one between your fingers — you’ll feel the edges)
  • Taller, faster growth than the rest of the lawn
  • Tends to thrive in wet or poorly drained soil

How to Control Nutsedge

1. Cultural Control

  • Fix Drainage Issues: Nutsedge thrives in soggy spots. Level out low areas and avoid overwatering.
  • Encourage a Dense Lawn: A thick, healthy lawn helps suppress nutsedge over time by reducing available space and sunlight.

Important:
We do not recommend pulling nutsedge by hand.
Pulling leaves the underground nutlet behind, which quickly sprouts new growth — making the problem worse.

2. Chemical Control – Spray, Don’t Pull

For effective control, spray using a selective herbicide designed for nutsedge.

We recommend:
Fertilome Weed-Out Nutsedge Control

This powerful, easy-to-use herbicide targets yellow nutsedge without harming most established turfgrasses.

Available in:

  • 16oz Concentrate – great for larger areas or custom mixing
  • 32oz Ready-To-Use – pre-mixed for spot treatments
  • 32oz Ready-To-Spray – connects directly to a garden hose for wide coverage

When to Apply:

  • Spray when nutsedge is actively growing (typically late spring through summer)
  • Do not mow 2 days before or after application
  • Rainfast within hours — follow label directions for best results

order yours

3. Stay Consistent

Controlling nutsedge is a process. Because it regrows from underground nutlets, multiple applications may be necessary throughout the growing season. Monitor your lawn, and reapply as needed for long-term control.

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