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The Best Tomato Companion Plants for a Thriving Garden

Unlock thriving tomato gardens with natural allies: Marigolds, Basil, Garlic, Nasturtiums, Yarrow, and Sunflowers!
A homestead with the best tomato companion plants


Tomato growing can be an arduous task, especially when pests and diseases threaten your prized crop. Did you know that companion planting is a natural way to protect tomatoes by repelling harmful insects and attracting beneficial ones? This blog post takes you through the best tomato companion plants, from pest controllers like Marigolds to pollination boosters such as Lavender.

Ready to transform your garden into a thriving paradise? Let’s dive in!

Key Takeaways

  • Marigolds, basil, and garlic are excellent companion plants for tomatoes, repelling harmful pests and keeping your garden healthy.
  • Nasturtiums, yarrow, and sunflowers attract beneficial insects to your tomato garden, improving pollination and pest control.
  • Crimson clover and radishes help with weed management in your tomato garden while enhancing soil quality.

The Science and Benefits of Companion Planting

Companion planting brings plants together that naturally benefit and support each other. These beneficial relationships are rooted in science, where specific plant pairings can enhance nutrient uptakerepel harmful insect pestsattract beneficial insectscontrol weeds and promote pollination.

The benefits of companion planting extend beyond mutual support among plants. It also contributes to a decrease in the reliance on chemical pesticides by harnessing natural pest repellents found in certain plants like calendula, chives or French marigolds – your tomatoes’ new best friends! Similarly, cilantro and parsley serve as welcome mats for helpful insects which encourage increased crop production.

A well-planned companionship with crimson clover allows sustainable weed control enhancing the overall health of your tomato garden.

Meanwhile, an addition of sunflowers or zinnias acts as a beacon for pollinators ensuring more productive harvests from your beloved tomato patches. Companion planting creates a symbiotic environment where every plant has a role to play allowing not just survival but mutual growth and success right inside your vegetable garden!

Understanding Tomato Companion Planting

Companion planting with tomatoes

Tomato companion planting employs a strategic arrangement of specific crops for mutual benefit. This thoughtful system harnesses natural interactions between plants to boost productivity and improve plant health.

Companion plants for tomatoes serve several essential roles in the garden, such as offering pest control, enhancing pollination, managing weeds and enriching soil nutrients. For instance, sage and French marigolds repel harmful insects that often target tomato yields while herbs like cilantro attract beneficial bugs to maintain pest balance naturally.

Plants also need other species nearby that can outcompete aggressive weeds. Crimson clover is useful here; it not only stifles weed growth but also fixes nitrogen from the atmosphere into the ground, providing necessary nutrition to your tomatoes.

Some tomato companions even promote better pollination rates – lavender draws in plenty of pollinators with its vibrant hues and tempting scents.

Moreover, some vegetables are known to improve health when planted alongside tomatoes directly; garlic confuses pests with its strong smell whereas basil enhances growth and flavor while warding off hornworms.

Understanding these symbiotic relationships enables you to maximize production without resorting to harsh chemicals or extra workloads — an all-around win for you and your garden.

Best Tomato Companion Plants for Pest Control

An off-grid garden with tomatoes

Marigolds, basil, and garlic are excellent companions for tomatoes, helping to repel harmful pests and keep your garden thriving. Discover more about these powerful partnerships.


Marigolds serve as an excellent companion for tomato plants. The bright hues and distinct aroma of marigolds act as a strong deterrent to harmful pests such as hornworms and aphids, making them a great choice for pest control in your tomato garden.

French marigolds take it a step further; they expertly repel root-knot nematodes lurking in the soil. These flowering plants also lure destructive bugs like aphids and whiteflies away from your treasured tomatoes, acting as effective trap crops.

Furthermore, these resourceful bloomers are perfect companions for tomatoes grown in container gardens due to their compact growth habit — all while warding off unwanted critters!


Basil is a powerhouse when paired with tomatoes. This herb’s strong scent keeps destructive pests like thrips and tomato hornworms at bay, safeguarding your vulnerable tomato plants from unwanted damage.

Additionally, basil wonderfully entices beneficial insects such as bees and butterflies which enhance pollination and overall garden health. If you’re concerned about chemicals in your garden, consider basil to maintain a balanced ecosystem naturally.

It’s flexible too – it thrives whether planted in the ground or pots alongside tomatoes. Beyond its gardening advantages, this companion plant offers delightful culinary uses – fresh pesto or seasoning for meals once harvested – serving not just the garden but also the kitchen!


Garlic is one of the best companion plants for pest control in a tomato garden. When planted alongside tomato plants, garlic helps repel harmful insects and diseases that can negatively impact their growth.

Additionally, garlic improves the overall health of tomato plants, promoting stronger and more vibrant growth. By deterring pests like aphids, nematodes, and spider mites, garlic reduces the need for chemical pesticides and promotes a healthier garden environment.

With its natural properties as a pest repellent, garlic is an excellent choice for homesteaders looking to maintain thriving tomato plants without relying on synthetic chemicals.

Tomato Companion Plants to Attract Beneficial Insects

Specific plants used to attract insects

Nasturtiums, yarrow, and sunflowers are excellent tomato companion plants that can help attract beneficial insects to your garden.


Nasturtiums are a great addition to your tomato garden as companion plants. These vibrant flowers not only add beauty, but they also serve an important purpose in attracting beneficial insects such as hoverflies.

Nasturtiums act as trap crops, drawing pests away from the tomato plants and protecting them from damage. They are commonly planted near tomatoes to enhance pest control and promote a thriving garden.

So, consider adding nasturtiums to your garden bed for their dual benefits of aesthetic appeal and natural pest management.


Yarrow is an excellent companion plant for tomato gardens. It has the special ability to attract beneficial insects that can help control pests in your garden. Ladybugs, syrphid flies, braconid wasps, and other predators are attracted to yarrow plants and they can assist in keeping aphids, flea beetles, and hornworm caterpillars under control.

By planting yarrow alongside your tomatoes, you create a favorable environment for these helpful insects to thrive and keep harmful pests at bay.


Sunflowers are a fantastic companion plant for tomatoes because they attract beneficial insects such as ladybugs, bees, and butterflies. These insects play a vital role in pollinating tomato plants, which leads to better fruit production.

Additionally, sunflowers can help control harmful bugs in the garden by attracting predators like ladybugs that feed on pests like aphids. By planting sunflowers alongside your tomatoes, you not only create a visually appealing garden but also improve the overall health of your tomato plants.

Tomato Companion Plants for Weed Management

Plants that assist with weed management

Crimson Clover and radishes are excellent companion plants for tomatoes, as they help control weeds and maintain the health of the tomato plants.

Crimson Clover

Crimson clover is an excellent companion plant for weed control in tomato gardens. Its dense foliage helps to suppress the growth of weeds, reducing competition for nutrients and water with your tomato plants.

By planting crimson clover alongside your tomatoes, you can create a natural mulch that not only inhibits weed growth but also improves soil quality as it decomposes. This vibrant red clover attracts beneficial insects like bees that help pollinate your tomato flowers, ensuring a fruitful harvest.

So, consider adding crimson clover to your garden to keep those pesky weeds at bay and promote the health of your tomato plants.


Radishes are a great companion plant for tomatoes, especially when it comes to weed management. These root vegetables not only help control the growth of weeds in your tomato garden but they also have the ability to trap flea beetles that can harm young tomato plants.

Radishes offer numerous benefits as companion plants for tomatoes, including enhancing nutrient uptake, providing pest control, encouraging pollination, and increasing crop production.

They can even be grown alongside tomatoes in containers, making them a versatile option for homesteaders looking to maximize their space.

Tomato Companion Plants for Disease Control

A series of companion plants for disease control

Chives, parsley, and asparagus are effective tomato companion plants for controlling diseases.


Chives are a fantastic companion plant for tomatoes, offering multiple benefits to your garden. These slender green herbs not only add flavor to your dishes but also help keep pests at bay.

Chives repel aphids, nematodes, and spider mites with their strong fragrance, preventing these harmful insects from damaging your tomato plants. Additionally, chives attract pollinators like bees and butterflies, which can enhance the production of tomatoes in your garden.

By planting chives alongside tomatoes, you create a natural pest control barrier while promoting healthy growth and increasing the chances of a bountiful harvest.


Parsley is a fantastic companion plant for tomatoes in your garden. It attracts ladybugs, which are beneficial insects that feed on aphids and hornworm eggs. By planting parsley alongside your tomato plants, you can help control these pests naturally without the need for pesticides.

Additionally, parsley has disease-fighting properties that can help protect your tomatoes from common diseases. While it may not repel harmful insects or directly improve tomato health, parsley provides valuable support in pest control and disease prevention.

Although it doesn’t aid in weed management or pollination, parsley is still a great addition to your tomato garden for its ability to attract beneficial ladybugs and protect against diseases.


Asparagus is a fantastic companion plant for tomatoes, as it provides benefits for disease control. When grown alongside tomato plants, asparagus can enhance their health and help prevent diseases from attacking them.

By planting these two together in your garden, you can create a favorable environment that inhibits the growth of harmful pathogens and keeps your tomato crop healthy. Asparagus is a great addition to your tomato garden and can contribute to the overall success of your harvest.

Tomato Companion Plants to Boost Pollination

Lavender and zinnias are excellent companion plants for tomatoes, attracting pollinators to increase fruit set and yield. Discover more about these beneficial plant pairings that will enhance your tomato garden’s productivity.


Lavender is a fantastic companion plant for tomatoes that can greatly enhance pollination. By attracting beneficial insects like bees and butterflies, lavender helps to ensure that your tomato plants are well-pollinated, leading to healthier and more abundant fruit.

The vibrant purple flowers of lavender act as beacons, drawing in these essential pollinators and increasing the chances of successful fruit set. When planted alongside tomatoes, lavender creates a beautiful and fragrant addition to your garden while also providing valuable support to your tomato crops.

So, consider adding some lavender plants near your tomatoes to encourage optimal pollination and enjoy the benefits of this wonderful companion plant.


Zinnias, with their vibrant colors and beautiful blooms, are not only a delightful addition to your garden but also excellent companion plants for tomatoes. These flowers attract important pollinators like bees and butterflies, increasing the chances of successful tomato pollination.

By having zinnias nearby, you can ensure that your tomato plants receive ample pollen transfer, leading to bigger and juicier fruits. So, consider planting zinnias alongside your tomatoes to create a visually appealing and productive garden space.

Plants to Avoid Planting with Tomatoes

Certain plants should be avoided as companions for tomatoes in your garden. These plants can potentially affect the health and growth of your tomato plants. It is important to consider which plants are compatible with tomatoes to ensure a thriving garden. Here are some plants to avoid planting with tomatoes:

  • Broccoli
  • Brussels sprouts
  • Cabbage
  • Fennel
  • Dill
  • Eggplant
  • Peppers
  • Potatoes
  • Cucumbers

Best Plants to Pair with Tomatoes in Containers

Sweet Alyssum and Thyme are great companion plants to pair with tomatoes in containers.

Sweet Alyssum

Sweet Alyssum is a fantastic companion plant for tomatoes in your garden. This beautiful flowering plant attracts beneficial insects like ladybugs, bees, and butterflies, which can help pollinate your tomato plants and control harmful pests.

Not only that, Sweet Alyssum is a nitrogen-fixing plant, meaning it increases the nitrogen levels in the soil, benefiting the growth of your tomatoes. It also provides shade for tomato plants, protecting them from intense sunlight and heat damage.

With its low-maintenance nature and suitability for containers, Sweet Alyssum is an ideal choice to grow alongside your tomatoes.


Thyme is an excellent companion plant to pair with tomatoes in containers. Not only does it add a pleasant aroma and flavor to your dishes, but it also improves the overall health of your tomato plants.

Thyme helps to deter pests like aphids and whiteflies, keeping your tomatoes safe from harm. Additionally, thyme attracts beneficial insects such as bees and butterflies, which are essential for pollinating your tomato flowers.

This dynamic duo of tomatoes and thyme can thrive together in a container garden, providing you with a bountiful harvest of delicious tomatoes all season long.

Practical Tips for Successful Tomato Companion Planting

Enhance the success of your tomato companion planting with these practical tips:

  1. Choose companion plants that repel harmful insects such as calendula, chives, black-eyed peas, and sage.
  2. Attract beneficial insects to manage pests in your tomato garden by planting cilantro, oregano, parsley, and borage.
  3. Control weeds effectively by incorporating crimson clover as a companion plant for your tomatoes.
  4. Increase pollination by including lavender, sunflowers, and zinnias near your tomato plants.
  5. Improve the health of your tomato plants with the help of asparagus, basil, carrots, garlic, and thyme.

Conclusion and FAQ’s

Maximize your tomato garden’s potential by incorporating companion planting strategies. By choosing the right plants to grow alongside tomatoes, you can repel harmful insects, attract beneficial ones, control weedsincrease pollination, and improve overall plant health.

Remember to avoid planting incompatible companions and opt for plants like marigolds, basil, garlic, nasturtiums, yarrow, sunflowers, chives, parsley, asparagus, lavender and zinnias to create a thriving garden that will yield bountiful tomatoes.

What are tomato companion plants?

Tomato companion plants are plants that are grown alongside tomatoes to improve their growth, deter pests, and increase overall yield.

What is a good companion plant for tomatoes?

Marigold is a good companion plant for tomatoes. It helps repel pests and attract beneficial insects that can enhance the health of tomato plants.

Can I plant tomatoes near other plants?

Yes, you can plant tomatoes near other plants. However, it is important to choose compatible plants that will not inhibit the growth of tomatoes.

What are some companion plants to increase beneficial insects?

Some companion plants that can increase beneficial insects in your tomato garden are marigold, basil, and borage.

Are there any companion plants for weed control?

Yes, there are companion plants that can help control weeds in your tomato garden. Some examples are marigold and sweet alyssum.

What are some companion plants to increase pollination?

Plants like basil, borage, and marigold can attract pollinators and increase pollination in your tomato garden.

Can I grow peppers and tomatoes together?

Yes, peppers and tomatoes can be grown together as they have similar growing requirements and can benefit from each other’s presence.

What are the benefits of tomato companion plants?

Tomato companion plants can help deter pests, improve soil health, attract beneficial insects, and increase pollination, resulting in healthier and more productive tomato plants.

Can I grow marigolds with tomatoes?

Yes, you can grow marigolds with tomatoes. Marigolds act as natural repellents against pests, and their vibrant flowers add beauty to your tomato garden.

What are some common tomato pests that companion plants can help control?

Some common tomato pests that companion plants can help control are tomato hornworms, aphids, and whiteflies.

Picture of Matt New

Matt New

Living off-grid since 2012 with my wife Amy and dog MJ in the jungles of Costa Rica. Co-creater of the award winning Fusion Home.
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