What Do June Bugs Eat?


June bugs, also known as June beetles, are a common sight during the summer months. These beetles belong to the Scarabaeidae family and are known for their distinctive buzzing sound and clumsy flight. While they may be a nuisance to some, they play an important role in the ecosystem. In this article, we will explore the dietary habits of June bugs in detail.

The Diet of June Bugs

June bugs have a diverse diet, consuming a wide range of organic matter. The exact diet of a June bug can vary depending on the species and its stage of development. Let’s take a closer look at the different food sources for June bugs:

1. Plant Roots and Tubers

One of the primary food sources for June bugs is plant roots and tubers. Adult June bugs, as well as their larvae (grubs), feed on the underground parts of various plants. They can cause damage to crops and lawns by feeding on the roots, leading to wilting and reduced plant health.

2. Fruits and Flowers

June bugs are attracted to ripe fruits and flowers. They feed on the nectar and pollen present in flowers, aiding in the pollination process. Additionally, they may also feed on soft fruits such as berries, causing damage to the crops.

3. Leaves and Foliage

Some species of June bugs, especially the adult beetles, feed on the leaves and foliage of plants. They chew on the edges and surfaces of the leaves, resulting in defoliation if the infestation is severe. This can impact the overall health and growth of the plants.

4. Decaying Organic Matter

June bugs, both in their adult and larval stages, play a vital role in the decomposition of organic matter. They feed on decaying plant material, such as fallen leaves and rotting wood, aiding in the nutrient recycling process. This helps maintain a healthy balance in the ecosystem.

5. Sap from Trees

Some June bugs have a preference for sap from trees. They may feed on the sap by creating small holes in the tree bark. While this feeding behavior is not harmful to the tree, it can attract other insects and pests.

6. Grass and Grains

June bug larvae, known as grubs, are often found in lawns and grassy areas. They feed on the roots of grass and can cause significant damage to the turf. Additionally, some species of June bugs may also consume grains, posing a threat to agricultural crops.

The Life Cycle of June Bugs

Understanding the life cycle of June bugs is essential to comprehend their dietary preferences at different stages:

1. Egg Stage

The life cycle of a June bug begins with the egg stage. Female June bugs lay their eggs in the soil, usually near a food source. The eggs hatch into small, white grubs within a few weeks.

2. Larval Stage

The larval stage of June bugs, commonly known as grubs, is the longest stage of their life cycle. Grubs have a C-shaped body with a creamy white appearance and a brown head capsule. During this stage, they primarily feed on roots and organic matter in the soil.

3. Pupal Stage

After several months of feeding and growth, the grubs enter the pupal stage. They transform into a hard-shelled, inactive stage known as pupae. Pupation occurs underground, and this stage typically lasts for a few weeks.

4. Adult Stage

Finally, the pupae develop into adult June bugs. The adults emerge from the soil and take flight, typically during the evening hours. They are attracted to lights and may be found near outdoor light sources. Adult June bugs have a lifespan of a few weeks to a few months, during which they mate and lay eggs to continue the life cycle.

Controlling June Bug Infestations

If you’re facing a June bug infestation that is causing damage to your plants or lawn, there are several methods you can employ to control their population:

1. Natural Predators

Encouraging natural predators such as birds, frogs, and toads can help control June bug populations. These predators feed on both the adults and grubs, keeping their numbers in check.

2. Biological Controls

Introducing beneficial nematodes or bacteria like Bacillus thuringiensis (Bt) to the soil can help control June bug larvae. These biological controls specifically target the grubs, reducing their population without harming other beneficial insects.

3. Cultural Practices

Adopting cultural practices such as regular mowing, proper irrigation, and removing fallen leaves can discourage June bugs from laying eggs and prevent the development of grubs in lawns.

4. Chemical Control

If the infestation is severe and other methods have proven ineffective, chemical control options are available. Insecticides labeled for June bug control can be applied to the affected areas, following the instructions and safety precautions provided by the manufacturer.


June bugs have a varied diet, consuming plant roots, tubers, fruits, flowers, leaves, decaying organic matter, sap, grass, and grains. Their feeding habits can impact plants, lawns, and crops. Understanding their life cycle and implementing appropriate control measures can help manage June bug infestations effectively, striking a balance between their ecological role and minimizing their impact on human activities.

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