It’s late on a warm summer evening, and you step outside only to find a large green insect clinging to your porch railing.
A little farther away, another one is sitting on a window screen.
Then you begin hearing their unmistakable chirping from nearby trees.
If you’ve started noticing katydids around your home, you’re probably wondering what attracted them.
The good news is that katydids aren’t trying to invade your house.
In most cases, they’re simply taking advantage of the same things that make your yard attractive to many other beneficial insects: plants, shelter, and warm summer weather.
The Short Answer
Katydids gather around homes because they’re attracted to:
- Trees and shrubs.
- Gardens and flowers.
- Warm summer weather.
- Outdoor lighting.
- Safe places to rest during the day.
- Plenty of leaves to feed on.
Unlike many household pests, katydids don’t enter homes looking for food or shelter. Most remain outdoors for their entire lives.
Your Yard Probably Looks Like Great Habitat
Katydids spend almost all of their lives outdoors.
Their favorite places include:
- Trees.
- Shrubs.
- Tall ornamental grasses.
- Flower gardens.
- Vegetable gardens.
- Dense landscaping.
These areas provide everything they need.
Food.
Protection from predators.
Places to hide.
Opportunities to find mates.
If your yard has plenty of healthy vegetation, it naturally becomes an attractive place for katydids.
They’re Excellent at Staying Hidden
One reason many homeowners think katydids suddenly appear overnight is because they’re incredibly difficult to see.
During the day, they often remain perfectly still among leaves where their bright green bodies blend in almost flawlessly.
You could walk past the same katydid several times without noticing it.
As evening approaches, however, they become much more active.
That’s when homeowners finally begin spotting them on decks, fences, railings, and porch screens.
Outdoor Lights Can Bring Them Closer
Katydids aren’t strongly attracted to lights the way moths often are, but outdoor lighting can still bring them closer to your home.
Why?
Because lights attract other insects.
Areas with plenty of insect activity can become convenient places for katydids to explore while searching for food or mates.
You’ll often notice them resting on:
- Porch railings.
- Exterior walls.
- Window screens.
- Garage doors.
- Patio furniture.
Usually, they’re simply stopping to rest before moving on.
Summer Is Peak Katydid Season
If it seems like katydids suddenly appear every year around the same time, you’re not imagining it.
Late summer is when adult katydids become most noticeable.
Warm evenings, abundant vegetation, and breeding activity all contribute to increased sightings.
That’s also when the familiar nighttime songs become much louder as males call to attract females.
Why Do They End Up on My Porch?
Porches offer several things katydids like.
They’re elevated.
Protected from rain.
Close to trees and landscaping.
And often illuminated after dark.
Sometimes a katydid simply lands there while moving through the yard.
Other times, it may stay overnight before returning to nearby vegetation the following day.
Finding one or two on your porch is completely normal during the summer.
Should You Worry About Katydids Around Your House?
In most cases, no.
Katydids aren’t considered household pests.
They don’t infest homes.
They don’t chew through walls.
They don’t damage furniture.
And they aren’t interested in your pantry.
Most homeowners simply notice them because they’re larger than many insects and are active during the evening.
How to Keep Katydids Away
If you’d prefer seeing fewer katydids around your home, a few simple changes can help.
- Turn off unnecessary outdoor lights when possible.
- Trim overgrown shrubs close to the house.
- Keep tree branches from touching the roof.
- Close doors promptly after dark.
- Repair damaged window screens.
These steps won’t eliminate katydids from your yard, but they can reduce how often they gather near your home.
My Advice
If you find a katydid around your house, I’d encourage you to simply enjoy seeing it.
They’re fascinating insects with incredible camouflage, impressive jumping ability, and some of the most recognizable nighttime songs in North America.
Most only remain around a home briefly before returning to nearby trees and shrubs.
If you’re curious whether the insect you found is actually a katydid, my What Is a Katydid? Easy Identification Guide shows the key features that make them easy to recognize.
Frequently Asked Questions
Why are katydids on my porch?
Katydids commonly rest on porches because they’re close to trees, shrubs, and other vegetation. Outdoor lighting may also encourage them to linger nearby.
Do katydids come inside houses?
Occasionally one may accidentally wander indoors through an open door or window, but they don’t establish indoor infestations and usually don’t survive long inside.
What attracts katydids?
Katydids are attracted to healthy vegetation, warm weather, sheltered resting places, and, in some situations, outdoor lighting that brings other insects into the area.
Are katydids bad to have around?
No. They’re generally harmless and are considered a normal part of the outdoor ecosystem.
Should I get rid of katydids?
Most homeowners don’t need to. Katydids rarely cause significant problems and usually leave on their own after a short time.
About the Author
Nathan Reynolds is an outdoor naturalist and insect educator with more than 18 years of experience photographing and studying insects commonly found around homes, gardens, and wooded landscapes. He enjoys helping homeowners identify unfamiliar insects and understand the important role they play in nature.
