What to Plant With Corn to Keep Bugs Away – 12 Excellent Companion Plants

Companion planting is a time-honored practice that involves strategically planting different crops together to maximize their mutual benefits. When it comes to corn, understanding what to plant alongside it can significantly contribute to bug control and overall crop health. Let’s delve into the world of corn companion planting and explore the various plants that can be allies in safeguarding your corn harvest.

Understanding Corn Companion Planting

Companion planting for corn involves selecting plants that can either enhance its growth or protect it from pests. One of the classic examples of companion planting is the three sisters technique, which combines corn, beans, and squash in the same planting area. Corn provides support for beans to climb, beans fix nitrogen in the soil, and squash acts as a natural mulch, suppressing weeds and retaining moisture.

Companion planting is not only about maximizing space but also fostering a harmonious relationship between different plant species. The benefits can range from improved soil fertility to pest control, creating a sustainable and diverse ecosystem within your garden.

The Three Sisters of Corn Companion Planting

The three sisters—corn, beans, and squash—work synergistically to support each other’s growth. Corn provides a sturdy structure for beans to climb, allowing them to reach sunlight more effectively. In return, beans fix nitrogen in the soil, providing an essential nutrient for the corn. Squash, with its broad leaves, acts as a living mulch, suppressing weeds and conserving soil moisture. This ancient practice showcases the interconnectedness of these plants and their collective contribution to a thriving garden.

Plants That Repel Bugs from Corn

Corn, like any crop, is susceptible to pests that can compromise its yield. Incorporating bug-repelling plants in proximity to corn is an effective way to naturally deter these pests. Let’s explore some key plants and their bug-deterring properties.


Thyme is a versatile herb that not only adds flavor to your culinary endeavors but also serves as a natural pest deterrent. Planting thyme near corn helps repel corn earworms, whiteflies, cabbage maggots, loopers, tomato hornworms, and small whites. Its aromatic qualities create a protective barrier, making it an excellent companion for corn.


Marigolds are more than just vibrant additions to your garden; they play a crucial role in pest management. These flowers attract predatory insects that feed on harmful pests while deterring nematodes, microscopic worms that can damage plant roots. Consider planting marigolds strategically to create a protective buffer around your corn.


Dill not only complements the flavor of various dishes but also attracts beneficial insects like ladybugs and parasitic wasps. These insects prey on harmful pests such as cucumber beetles and flea beetles, providing a natural and sustainable form of pest control for your corn.


The invigorating scent of mint isn’t just pleasant for humans—it’s a deterrent for aphids, ants, and flea beetles. By planting mint near your corn, you create an environment that is less hospitable to these pests. This aromatic herb adds both culinary and pest-repelling value to your garden.


Nasturtiums are not only visually appealing with their vibrant flowers but also serve as effective bug repellents, including corn aphids. These plants attract predatory insects that help maintain a balance in your garden ecosystem, keeping harmful pests in check.


Oregano, with its strong aroma, acts as a natural deterrent for leafhoppers, spider mites, and aphids. Including oregano in your corn companion planting scheme adds an extra layer of protection, creating an environment that is less favorable for these common pests.

Other Companion Plants

In addition to the mentioned plants, several others contribute to bug control when planted with corn. Borage, with its attractive blue flowers, is known to repel tomato hornworms. Garlic, with its pungent aroma, can deter a variety of pests. Basil, a popular herb in many kitchens, has insect-repelling properties that make it a valuable companion for corn.

What to Plant With Corn to Keep Bugs Away

Corn Companion Planting Chart

Creating a comprehensive chart detailing various companion plants for corn can serve as a handy reference for gardeners. This chart can help you plan your garden layout, ensuring that your corn benefits from the presence of compatible plants. Below is a sample corn companion planting chart:

Companion Plant Pest Repelled Benefits
Thyme Corn earworms, whiteflies, cabbage maggots Aromatic pest deterrent
Marigolds Nematodes Attracts predatory insects, suppresses weeds
Dill Cucumber beetles, flea beetles Attracts ladybugs, parasitic wasps
Mint Aphids, ants, flea beetles Aromatic pest deterrent
Nasturtiums Aphids, including corn aphids Attracts predatory bugs
Oregano Leafhoppers, spider mites, aphids Strong aroma repels pests
Borage Tomato hornworms Repels specific caterpillar pests
Garlic Various pests Pungent aroma deters pests
Basil Insects in general Insect-repelling properties

This chart provides a quick overview of the pest-repelling properties and additional benefits of each companion plant, aiding you in making informed decisions for your garden.

companion plants

Planting Strategies

When it comes to planting corn, a strategic approach can make a significant difference in both growth and pest control. Understanding how to plant corn with other companion plants, such as sunflowers, and selecting suitable neighbors for optimal growth are key considerations.

How to Plant Corn and Sunflowers Together

Planting corn and sunflowers together can be a mutually beneficial arrangement. Sunflowers, with their tall stalks and large flowers, provide natural support for climbing crops like corn. The sunflower’s height also offers shade to the corn, helping conserve soil moisture and reduce weed growth. When incorporating sunflowers into your corn planting, consider alternating rows for an aesthetically pleasing and functional garden layout.

What to Plant Next to Corn for Optimal Growth and Bug Prevention

Choosing the right companions for your corn involves considering plants that complement its growth while providing bug-deterring benefits. Plants like beans, with their ability to fix nitrogen in the soil, can enhance the overall health of corn. Additionally, bug-repelling herbs and flowers, as discussed earlier, can create a protective barrier against common pests. When planning your garden, take into account the growth habits and compatibility of various plants to optimize the health and resilience of your corn crop.

Can Two Corn Stalks Grow Together?

Yes, two corn stalks can grow together, and this phenomenon is known as “twinning” or “double-cobbing.” Twinning occurs when two corn plants, usually of the same genetic makeup, grow in close proximity and share the same root system. While this occurrence is fascinating, it’s essential to provide adequate spacing between corn plants to ensure optimal growth and prevent overcrowding. Planting corn at recommended spacing allows each plant to receive sufficient sunlight, nutrients, and airflow, contributing to healthier and more productive corn stalks.

Beyond Corn: Companion Planting for Other Crops

Companion planting isn’t limited to corn alone; it extends to other crops in your garden. Understanding what to plant with tomatoes, exploring the compatibility of onions and corn, and discovering the benefits of planting beans between rows of corn are essential aspects of creating a harmonious and productive garden ecosystem.

What to Plant with Tomatoes to Keep Bugs Away

Tomatoes, like corn, are susceptible to various pests, and choosing the right companions can aid in pest management. Basil is a well-known companion for tomatoes, as it repels insects that commonly affect tomato plants. Additionally, planting marigolds near tomatoes can deter nematodes and provide a protective barrier against harmful pests. By strategically selecting companions for your tomatoes, you create a healthier and more resilient environment for these popular garden vegetables.

Can Onions and Corn Be Planted Together?

Yes, onions and corn can be planted together, and their combination can offer mutual benefits. Onions are known for deterring pests such as aphids and thrips. By planting onions between rows of corn, you create a natural barrier against these pests, contributing to overall pest control in your garden. Additionally, the distinct growth habits of onions and corn allow them to coexist without competing for space or nutrients.

Exploring the Benefits of Planting Beans Between Rows of Corn

Planting beans between rows of corn is a classic example of companion planting, often referred to as the three sisters technique. Beans, with their ability to fix nitrogen in the soil, complement the nutrient requirements of corn. This symbiotic relationship enhances the overall fertility of the soil, benefiting both crops. Additionally, the vertical growth of beans provides natural support for the climbing nature of corn, creating a harmonious and space-efficient garden layout.

Addressing Common Queries

As gardeners embark on the journey of companion planting, several common queries arise regarding the compatibility of certain crops. Let’s address some of these questions to provide clarity and guide you in making informed decisions for your garden.

Can You Plant Peppers, Cucumbers, and Zucchini with Corn?

Yes, you can plant peppers, cucumbers, and zucchini with corn, but careful consideration of their growth habits and compatibility is crucial. Peppers, being in the nightshade family like tomatoes, may benefit from similar companions, such as basil. Cucumbers and zucchini, on the other hand, can coexist with corn, provided they receive adequate spacing and sunlight. When planning your garden layout, consider the unique needs of each crop to create a thriving and mutually beneficial environment.

Can Corn Be Planted in the Same Spot Every Year?

While corn can be planted in the same spot every year, it’s essential to practice crop rotation to prevent soil depletion and reduce the risk of disease and pests. Crop rotation involves changing the location of crops within your garden to disrupt the life cycles of pests and pathogens that may be specific to certain plants. By rotating your crops annually, you promote soil health and reduce the likelihood of issues that may arise from continuous planting in the same location.

Can Bush Beans Be Planted with Corn?

Yes, bush beans can be planted with corn, especially in the context of the three sisters companion planting method. Bush beans, with their compact growth habit, are well-suited for planting between rows of corn. They contribute to nitrogen fixation, enhance soil fertility, and provide vertical support for climbing corn. This symbiotic relationship exemplifies the principles of companion planting, showcasing the interconnectedness of different crops in a garden ecosystem.

Ensuring Corn Health and Happiness

Caring for your corn plants goes beyond selecting the right companions; it involves understanding the specific needs of corn and implementing strategies to promote their overall well-being. From determining the number of corn plants needed for a given number of people to addressing the consequences of planting corn too close together, these insights contribute to the health and happiness of your corn crop.

How Many Corn Plants Do You Need for One or Two People?

The number of corn plants you need depends on factors such as the desired yield, space available, and individual consumption. On average, a single corn plant may produce one or two ears of corn. For a family of two, planting around 20 to 30 corn plants should provide an ample supply. However, it’s essential to consider your specific dietary preferences and the role corn plays in your overall garden plan.

Consequences of Planting Corn Too Close Together

Planting corn too close together can have several negative consequences, including competition for nutrients, reduced air circulation, and increased susceptibility to pests and diseases. Corn plants require adequate spacing to allow for proper root development and access to sunlight. When crowded, they may become stunted, leading to lower yields and potential issues with pest infestations. Following recommended spacing guidelines for corn ensures optimal growth and minimizes the risk of overcrowding-related problems.

Natural Methods to Protect Corn from Pests

In addition to companion planting, there are several natural methods to protect corn from pests. Introducing beneficial insects, such as ladybugs and predatory wasps, can help control harmful pests. Neem oil, a natural insect repellent, can be applied to corn plants to deter a variety of pests. Additionally, regular inspection of plants for signs of infestation and prompt action, such as removing affected leaves, can contribute to pest management without the use of harmful chemicals.


Companion planting for corn is a holistic and sustainable approach to gardening that goes beyond mere cultivation. By strategically selecting companion plants, you create a resilient and biodiverse ecosystem that enhances the health and productivity of your corn crop. From bug-repelling herbs to the art of intercropping, these practices contribute to a thriving garden that not only provides sustenance but also fosters a harmonious relationship between different plant species. As you embark on your journey of corn companion planting, remember to observe and adapt, allowing your garden to flourish through the interconnected dance of nature.

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Amelia Clark

I'm Amelia Clark , a seasoned florist and gardening specialist with more than 15 years of practical expertise. Following the completion of my formal education, I dedicated myself to a flourishing career in floristry, acquiring extensive understanding of diverse flower species and their ideal cultivation requirements. Additionally, I possess exceptional skills as a writer and public speaker, having successfully published numerous works and delivered engaging presentations at various local garden clubs and conferences. Check our Social media Profiles: Facebook Page, LinkedIn, Pinterest, Youtube, Instagram Tumblr

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