Protect Against Invasive Insects

See how you can stop the devastation before it begins.

Invasive pests are non-native insects, animals and plants that are introduced into an environment, often with devastating effects. These non-native pests are often accidentally introduced into an environment, and with unintentional human help and few, if any, natural predators, they can spread rapidly. We’re focused on eliminating invasive insects and protecting the plants they threaten, and so can you.

Tiny insects that pose huge threats

These are some of the most devastating invasive insects in America today. Good stewardship starts with knowing how to identify these pests and recognizing signs of infestation. Learn where they’re currently located, what plants they target, how to report them, and what products kill them. For more information, visit the link for each individual pest.

Emerald Ash Borers

These small, metallic-green beetles have killed tens of millions of ash trees across 30 states. Their larvae tunnel underneath ash bark, often remaining unnoticed, until it’s too late for your tree. Get more facts from The Arbor Day Foundation.

Japanese Beetles

Voracious eaters, these metallic-green and copper-colored beetles devour over 300 plant species, skeletonizing leaves and defoliating entire plants. When feeding, they give off a pheromone that attracts more Japanese Beetles to your plant. See what the University of Kentucky has to say about these pests.

Gypsy Moth Larvae

Is your tree losing its leaves? These caterpillars could be the cause. Recognizable by their dark grey or blue bodies, red spots and long hairs, these eating machines hatch in April and attack a wide variety of trees, including aspen, oak, even conifers.

Asian Citrus Psyllids

Both the adults and nymphs of these tiny, winged insects feed on the new shoots of citrus plants, causing extensive damage. But the bigger danger is their ability to spread Citrus Greening Disease, an incurable disease that ruins fruit and is threatening the citrus industry.

Spotted Lanternflies

These sucking insects from southeast Asia are relatively new to America. Discovered in 2014, they have already spread throughout the Northeast. These planthoppers feed on over 70 types of plants and secrete honeydew, which encourages the growth of sooty mold. Plus they lay egg masses on just about anything, including vehicles. Penn State Extension has more details about these hungry pests.

Monitoring and reporting

Federal quarantine areas have been established for many of these invasive insects, but officials need our help. Hotlines and websites make it easy to report a sighting or suspected infestation.

For example: Spotted Lanternflies can be reported here or by calling 1-888-4BAD-FLY.

Stopping the spread

Good stewardship practices can slow or prevent the further spread of invasive insects to new areas. Make sure you:

  • Always declare any agricultural items – especially when returning from international travel
  • Do not move plants or plant parts long distances – keep it local, bringing plants across state lines can accelerate spreading
  • Only use certified and reputable sources – online sales can send insects long distances they could have never traveled on their own
  • Buy local, burn local – firewood is the perfect hiding place for invasive insects, buy heat-treated wood when possible
  • Check before you move – outdoor furniture or equipment is the perfect harboring place for attached egg sacs or hidden pests
  • Keep it clean – make sure to wash clothing, shoes and equipment before returning home to eliminate hiding or unknown insects from hitching a ride


Japanese Beetles are a three-season threat.

After feeding on your plants in summer, adult Japanese Beetles lay eggs in your lawn which hatch into White Grubs in the fall. These destructive larvae attack your lawn’s roots in fall, go dormant during winter, then return the following spring to feed and pupate into Japanese Beetles which emerge in summer.

Systemic products target hidden insects

Because systemic products are taken up through the roots and into internal tissues, they protect the entire plant to the tip of every leaf. This is especially important in stopping invasive insects that bore under the bark, hide underneath leaves and lay eggs that hatch into barely visible larvae. Many systemic products offer long-lasting, preventative protection, so you can stop an invasive infestation before it starts.

Apply Responsibly

Of course, you want to kill invasive insects. But remember, applying more pesticide doesn’t mean you’ll get more control. Over application can cause other problems like run-off, spray drift and overexposure to non-targeted insects. Always read and follow label instructions to learn the precise amounts of product needed for control. Get more tips on responsible application and disposal.

Copyright © 2024 Natria. All rights reserved.