Nutsedge vs. Crabgrass: How to Spot the Difference and What to Do About It

What Is Nutsedge?

Nutsedge (also known as nutgrass) is a stubborn, fast-growing weed that pops up in wet or compacted areas of your lawn — especially after heavy rain or overwatering. It thrives in poor drainage zones, near irrigation heads, and in shady low spots.

How to Identify Nutsedge in NJ Lawns:

• Blades are bright yellow-green (lighter than your turf).

• The stems are triangular — try rolling them between your fingers.

• Grows faster and taller than your regular lawn grass (you mow it, it shoots back up).

• Stiff and upright — stands out in the lawn.

• No seed heads at first, but it spreads via underground tubers.

Common in Belle Mead, Hillsborough, and Skillman lawns with clay or compacted soil.

What Is Crabgrass?

Crabgrass is a warm-season annual weed that shows up in thin, bare, or sun-exposed areas of your lawn. You’ll often see it around driveways, sidewalks, and lawn edges in the heat of summer.

How to Identify Crabgrass in Central NJ:

• Blades are broad and flat, with a coarser texture than turf.

• Grows in low, sprawling clumps — like a crab’s legs.

• Color is dull green, blending a bit more than nutsedge.

• Often produces finger-like seed heads by mid to late summer.

We often see crabgrass in Princeton, Hopewell, and Pennington lawns that didn’t get pre-emergent treatment.

Quick Comparison: Nutsedge vs. Crabgrass

How to Treat Nutsedge in Skillman & Belle Mead Lawns

Nutsedge is notoriously hard to kill. Regular weed control won’t touch it.

What Works:

• Use sedge-specific herbicides (like halosulfuron or sulfentrazone).

• Fix drainage and avoid overwatering.

• Aerate your soil to reduce compaction.

Green Valley Lawn Care offers nutsedge spot treatments with professional-grade products — available to customers in our service area.

How to Treat Crabgrass in Central NJ

Unlike nutsedge, crabgrass is easier to control — if you start early.

Best Strategies:

• Apply pre-emergent crabgrass control in early spring (March–April) before soil temps reach 55°F.

• Keep your lawn thick and healthy to crowd out new growth.

Our Green Valley Lawn Care programs include 2X spring crabgrass prevention.

Not Sure Which One You Have?

We make it easy. If you’re seeing strange weeds in your lawn:

✅ Text us a photo
✅ Call us for an on-site lawn inspection
✅ We’ll ID it and apply the right treatment — no guesswork

We help families across Skillman, Belle Mead, Princeton, Hillsborough, Pennington, and Hopewell enjoy greener, healthier lawns with fewer weeds — all season long.

Why Green Valley Lawn Care?

At Green Valley, we specialize in weed identification and control for Central New Jersey lawns. Our trained techs know what thrives in our local climate and soil — and we customize treatments for each property.

We’re proud to be the local lawn care partner for homeowners who want:

• Professional results

• Prompt, clear communication

• Friendly, reliable service with local roots

Book a Free Lawn Weed Inspection

Got weird weeds? Wondering if it’s nutsedge or crabgrass?

Let’s take a look — no pressure, just honest advice.

📍 Serving: Skillman, Belle Mead, Hillsborough, Princeton, Pennington & Hopewell
📞 Call us today.