Do praying mantis eat japanese beetles

You’re out in your garden on a beautiful summer day, enjoying the fruits of your labor and admiring the vibrant flowers and plants. Suddenly, you notice a small, metallic-green bug crawling on one of your rose bushes. You’ve seen this type of bug before, and you know it’s not good news. It’s a Japanese beetle, and it has the potential to cause major damage to your garden.

As you try to shoo the beetle away, you start to wonder if there’s a natural solution to getting rid of these pesky pests. That’s when you remember hearing that praying mantises are great at controlling insect populations. But do praying mantis eat Japanese beetles?

In this blog post, we’ll explore the topic of praying mantis and Japanese beetles and whether or not these insects can help solve your pest problem.

Do Praying Mantis Eat Japanese Beetles?

Praying mantises are known for their voracious appetites and their ability to eat a variety of insects, including mites, aphids, flies, and even other praying mantises. So, it’s not surprising that many gardeners wonder if praying mantises can help control Japanese beetles, which are considered a major pest in many parts of the United States.

The short answer is yes, praying mantises will eat Japanese beetles if they come across them. However, it’s important to note that praying mantises are not a reliable or sustainable solution for controlling Japanese beetles in your garden. Here’s why:

Praying Mantis Populations Can Be Unpredictable

Praying mantises are not a native species to North America, so their populations can fluctuate significantly from year to year. This means that even if you have a lot of praying mantises in your garden one year, you might not have as many the following year.

Furthermore, praying mantises have a relatively short lifespan, typically only living for one season. This means that even if you do have a good population of praying mantises in your garden, they will eventually die off and need to be replaced.

Japanese Beetles Are Mobile Insects

Japanese beetles are known for their ability to fly, which means they can move freely from one location to another. This makes it difficult for praying mantises to control their population, as the beetles can simply fly away to another part of your garden or a neighboring yard.

Praying Mantises Aren’t Selective Eaters

While praying mantises do a great job at controlling certain types of insects, they are not selective eaters. This means they will eat whatever insects they come across, including beneficial insects such as bees and butterflies. This can create an imbalance in the ecosystem of your garden, potentially leading to other pest problems.

Solutions for Controlling Japanese Beetles

So, if praying mantises aren’t the best solution for controlling Japanese beetles, what can you do to protect your garden from these pests? Here are a few options to consider:


One of the most effective and least labor-intensive methods for controlling Japanese beetles is simply to handpick them off your plants and dispose of them. This can be a time-consuming task, but it’s a safe and effective way to reduce the population of Japanese beetles in your garden.

Using Insecticides

There are several insecticides available that are effective at controlling Japanese beetles. It’s important to read the label carefully and follow the instructions to ensure the safety of your plants and the environment.

Planting Japanese Beetle-Resistant Varieties

Certain plants are more resistant to Japanese beetles than others. Planting these varieties can help reduce the risk of

damage to your garden. Some examples of Japanese beetle-resistant plants include:

  • Marigolds
  • Petunias
  • Zinnias
  • Geraniums
  • Salvias

Using Traps

Japanese beetle traps can be an effective way to control the population of these pests in your garden. These traps use a pheromone attractant to lure the beetles in, and then they are trapped inside. It’s important to place the traps away from the plants you want to protect, as the attractant can also lure in beneficial insects.

Attracting Natural Predators

In addition to praying mantises, there are other natural predators that can help control the population of Japanese beetles in your garden. These include birds, such as robins and blue jays, and certain types of wasps. Encouraging these predators to visit your garden can be as simple as providing a water source and planting native flowering plants to attract them.


Japanese beetles can be a frustrating pest for gardeners, but there are several options available for controlling their population. While praying mantises will eat Japanese beetles if they come across them, they are not a reliable or sustainable solution for controlling these pests. Handpicking, using insecticides, planting Japanese beetle-resistant plants, using traps, and attracting natural predators are all effective methods for controlling Japanese beetles in your garden.

By taking a proactive approach and implementing a combination of these control methods, you can protect your garden from Japanese beetle damage and enjoy a beautiful, thriving space all season long.


How long is japanese beetle season?

Japanese beetles typically have a seasonal cycle that lasts for about six weeks. This can vary depending on the location and climate, but in most parts of the United States, Japanese beetle season occurs from late June to early August. During this time, adult Japanese beetles emerge from the ground and begin feeding on plants, flowers, and trees. After mating, the females lay eggs in the soil, and the larvae (grubs) develop over the winter. The grubs then emerge as adult beetles the following summer.

What do Japanese beetles look like?

Japanese beetles are small insects that measure about 1/2 inch long and are metallic green in color. They have a distinctive copper-colored thorax and wing covers, and they have six small legs and antennae.

What kind of damage do Japanese beetles cause?

Japanese beetles are known to feed on a wide variety of plants, flowers, and trees, causing damage to leaves, flowers, and fruit. They tend to feed in groups, and their feeding can result in skeletonized leaves, with only the veins remaining. Japanese beetles can also transmit diseases to plants.

How do you control Japanese beetles in the garden?

There are several methods that can be used to control Japanese beetles in the garden, including handpicking the beetles off plants, using insecticides, planting Japanese beetle-resistant varieties, and using traps. It’s important to read the label carefully and follow the instructions when using any type of chemical control, and to consider the potential impacts on beneficial insects as well as the target pests.

What are some Japanese beetle-resistant plants?

Some plants that are more resistant to Japanese beetles include marigolds, petunias, zinnias, geraniums, and salvias. Planting these varieties can help reduce the risk of damage to your garden.

Can Japanese beetles be eradicated?

It is difficult to completely eradicate Japanese beetles, as they have a wide range of host plants and are able to fly over long distances. The best approach is to use a combination of control methods to manage their population and minimize the damage they cause to your garden.

What do praying mantises look like?

Praying mantises are long, slender insects that are typically green or brown in color, making them well-camouflaged in their natural habitat. They have a distinctive triangular head with large, compound eyes and long, thin antennae. Their front legs are modified into grasping appendages that they use to capture prey.

What do praying mantises eat?

Praying mantises are carnivorous insects that feed on a wide variety of prey, including insects, spiders, and even small vertebrates like lizards and birds. They are known for their voracious appetites and will eat whatever prey they can catch, including other praying mantises.

Where do praying mantises live?

Praying mantises are found in a variety of habitats around the world, including forests, grasslands, and gardens. They are well-adapted to their environment and can be found in both warm and cold climates.

How do praying mantises reproduce?

Most praying mantises reproduce sexually, with the male and female mating after a courtship ritual. After mating, the female praying mantis will lay a batch of eggs, which are often encased in a hard, foam-like substance called ootheca. The eggs hatch into nymphs, which resemble small adult praying mantises and undergo a series of molts as they grow and develop into adults.

Do praying mantises have any natural predators?

Praying mantises have few natural predators due to their size and ability to defend themselves. However, they can fall prey to birds, lizards, and other predators that are able to catch and eat them. Praying mantises also face threats from habitat loss and other human-related activities.

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