How to identify and get rid of grass spiders

Grass spiders are known for the long funnel webs they build in gardens and tall grass, hiding away in them and waiting for an insect to stumble into their lair. They play an important role in controlling pests around your home, but they too can become a pest when they accidentally wander inside.

These spiders are a part of the funnel-weaver family of spiders and are named for their distinctive funnel-shaped webs, which they weave between grass blades or under objects on the ground.

Although they might seem a bit eerie with their quick movements and large webs, grass spiders are generally shy and avoid human contact, focusing instead on trapping insects in their silky constructions.

Females will lay their eggs in a sac in the late summer or fall, and the egg sac will stay hidden away until spring. When temperatures start to warm, the eggs will hatch into spiderlings that run off to find their first meals.

The webs they create aren’t sticky, but are formed into sheets that prevent a wandering insect from escaping. Grass spiders are very fast, and once an insect has walked into their funnel web, they quickly run and pounce on them.

Grass spiders are easily identified by their unique webs, which are flat and sheet-like with a distinctive funnel where the spider hides. These spiders are brown or gray with two distinct longitudinal stripes on the cephalothorax (the combined head and thorax). While they're generally outdoor spiders, you might occasionally find one indoors during colder months seeking warmth.

How big are grass spiders?

Grass spiders range in size, with most adults measuring between 0.5 to 1 inch in body length.

Grass spiders are found throughout the United States, thriving in yards, gardens, forests, and fields. In the yard, you'll find grass spiders in low-lying web funnels among grass, under objects, or in bushes. Indoors, they might be found in basements and ground-level rooms, especially near windows or doorways where they can escape easily.

Grass spiders are usually pretty shy around humans and will stay outside in their nests and funnel webs. However, they will wander inside during cooler months in the fall, so it’s important to take a few precautions before fall hits.

Web Removal: Regularly clear away webs with a broom or hose.

Reduce Clutter: Keep gardens and lawns tidy to minimize shelter for spiders.

Seal Entry Points: Caulk gaps in doors, windows, and foundations to prevent spiders from entering the home.

Pest spray: A spray, like the one Pestie offers, can be applied inside and outside the home, keeping spiders from invading your indoor areas. A Pestie subscription gives you pro-grade protection all-year long without dealing with a traditional pest control company.