The 10 Best Tomato Companion Plants - Garden Design (2024)

Did you know that certain plants can help your tomatoes thrive even more?By Sarah HutchinsonPublished: 7/6/2022

The 10 Best Tomato Companion Plants - Garden Design (1)

Tomatoes grow in a bed with peppers, strawberries and basil, as well as flowers that attract pollinators. Photo by: Proven Winners.

Tomatoes are a staple in vegetable gardens and home cooking. Many gardeners plant them in their backyards and in containers because they are rich in nutrients, delicious and productive.

Tomato plants are easy to grow and maintain, but are sometimes impacted by pests, disease, low production or other issues. Luckily, there are vegetables, herbs and flowers that make great tomato companion plants. Below you’ll find a list of 10 plants that you can grow near your tomatoes to help them thrive.

What Are the Benefits of Tomato Companion Plants?

Companion planting is the practice of growing certain plants together to create a mutually beneficial relationship. Make sure the companions you choose flourish in the same conditions so they'll do well alongside your tomatoes.

Some benefits of growing tomatoes with companion plants:

  • They attract beneficial insects that pollinate your tomatoes
  • They repel pests that may eat your tomato plants
  • They prevent diseases by acting as natural fungicides
  • They create an eco-system that is good for everything growing in your garden
  • They enhance the flavor of your tomatoes
  • They improve yield and increase the quality of your fruit
  • They partner well with tomatoes in recipes

Top 10 Companion Plants for Tomatoes

You may want to include some of these common companion plants in your garden:

Photo by: Bruno Glätsch / Pixabay.com.

1. Marigolds

The bright colors and strong scent of marigolds make them an excellent deterrent against insects like tomato hornworms and aphids. These very same attributes can also attract other pests. Planting a row of marigolds around your tomatoes can help ensure that the bugs feed on the marigolds and not on your fruit.

2. Garlic

Garlic is a natural pest repellent that can help keep moths away from your tomatoes by masking the smell of ripening fruit. It also keeps other pests like cabbage loopers and root maggots away from plants with its strong odor.

Photo by: MabelAmber / Pixabay.com.

3. Onions

Like garlic, onions are also known as natural pest repellents due to their strong odor. They are great companion plants for tomatoes. But, if you're struggling with thrips in your garden, avoid planting onions, leeks, or garlic near your tomatoes. While they are normally great companions, these root veggies are susceptible to thrips too.

Photo by: Proven Winners.

4. Lavender

The sweet-smelling flowers of lavender plants repel mosquitoes and other flying pests while also keeping aphids away from nearby crops such as strawberries or cucumbers (but not blueberries). Lavender also attracts bees that help pollinate your crops, which can lead to better yields and higher quality produce.

Buy lavender from Proven Winners.

Photo by: Proven Winners.

5. Basil (Ocimum basilicum)

This herb helps control aphids, spider mites, and thrips. It’s also good for repelling mosquitoes because it contains eugenol oil in its leaves, which gives basil its distinctive smell. Many gardeners say that basil also makes your tomatoes more flavorful. Plus, they taste great together in recipes.

Buy basil from Proven Winners.

Photo by: ganatelier / Pixabay.com.

6. Chives (Allium schoenoprasum)

Like basil, chives will protect against predators like aphids and spider mites by producing natural oils in its leaves that give off an onion-like odor when crushed or brushed up against—a smell most bugs don't like.

Photo by Africa Studio / Shutterstock.

7. Asparagus

This is a textbook example of a symbiotic relationship between plants. Tomatoes produce a natural chemical called solanine, which is a repellant for the asparagus beetle. In turn, asparagus produces a natural fungicide that helps prevent early blight and botrytis. It also helps prevent root-knot nematodes in the soil.

Photo by 1195798 / Pixabay.com.

8. Celery

Celery is a great bug-deterring companion for tomatoes. Something about the smell puts off many of the bugs that love to eat tomatoes!

Photo by deluna / Pixabay.com.

9. Parsley

If you're struggling with aphids destroying your tomato plants, you definitely need to plant a barrier of parsley. Parsley attracts hoverflies, and their favorite food is aphids! Be aware though, that not every tomato variety sits well with parsley, so do a little extra research before adding parsley near your tomato plants.

Photo by: Proven Winners.

10. Peppers

This is up for debate, but the general consensus is that peppers and tomatoes are okay together—and you’ll be able to make a mean salsa. But, there can be an increased risk of disease as they are both from the nightshade family.

Buy peppers from Proven Winners.

What Not to Plant with Your Tomatoes

Now that you know the best 10 plants to grow with tomatoes, here’s a list of plants that don't mix well with them. These plants can actually inhibit the growth of tomatoes by increasing the possibility of diseases and competing for nutrients in the soil.

  • Dill
  • Eggplant
  • Brussel Sprouts
  • Cabbage
  • Corn
  • Cucumber
  • Potatoes
  • Strawberries
  • Cauliflower
  • Broccoli

You can find out more about why these plants don't partner up nicely with tomatoes in this great companion planting guide.

In this video, Lindy @smalltowngardenlife tells us more about our favorite tomato companion plants.

A Note on Beneficial Insects

Beneficial insects are good bugs that help keep pests away from your garden. Identifying which bugs are good and which are bad is the first step. Once you identify pests that are damaging your garden, you may be able to introduce a beneficial insect to help keep them away. For instance, ladybug and green lacewing larvae love to eat aphids, as do hoverflies. Learn more about beneficial insects.

Frequently Asked Questions

What can I plant with tomatoes in a pot?


Beans, amaranth, basil, and asparagus are a few options. If you have a deep enough pot, you can even try planting carrots.

Can you plant squash next to tomatoes?

Yes, they make great companion plants. Squash have large, broad leaves which help to keep the moisture in the ground.

What family does the tomato belong to?

Tomatoes are part of the nightshade family. Potatoes, eggplants, and tobacco are also part of the nightshade family.

Can you plant zucchini and tomatoes together?

Yes you can! Members of the squash family and tomato plants prefer not to get their leaves wet. That makes irrigating these two crops together much easier.

What flowers to plant with tomatoes?

Nasturtiums, marigolds, and borage are a few. Sunflowers are also an excellent companion for tomatoes.

There are any number of ways to combine a few of your favorite companion plants with your tomato crop. Most of the buddy plants suggested here are edible, so you will be rewarded with an abundance of home-grown and healthy produce.

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The 10 Best Tomato Companion Plants - Garden Design (2024)

FAQs

Can I plant tomatoes and peppers together? ›

Tomatoes. Although it's usually recommended to not plant tomatoes and peppers right after each other in the same bed every year, they can be grown together in the same garden bed (and then rotated to another bed next season).

What is the best tomato planting mix? ›

Many pre-made soilless potting mixes are available at garden centers, but you can also make your own by combining one bushel each of vermiculite and peat moss, 1 ¼ cups of dolomitic lime, ½ cup of 20 percent superphosphate and 1 cup of 5-10-5 fertilizer. Incorporating some quality compost will add additional nutrients.

What is the best combo with tomatoes? ›

Tomatoes are also fantastic with fruit such as apricot, lychee, nectarines and peach, or berries like raspberry and strawberry. If you'd like to try an unusual herb pairing, lemon balm is a good choice. You could also look further afield for drinks. Cointreau a flavour match for tomatoes, as is a light, floral gin.

What should not be mixed with tomato? ›

Tomatoes, which are considered acidic, do not mix well with starchy carbs such as pasta. This already-cumbersome combo turns into a recipe for digestive problems when you add dairy to it.

How to layout a vegetable garden? ›

As a general rule, put tall veggies toward the back of the bed, mid-sized ones in the middle, and smaller plants in the front or as a border. Consider adding pollinator plants to attract beneficial insects that can not only help you get a better harvest, but will also prey on garden pests.

Why plant marigolds with tomatoes? ›

Marigolds help attract bees and other beneficial insects to tomato plants. Although tomato plants are self-pollinating plants, they do benefit from insect pollination to increase the fruit production of each plant. Marigolds also attract beneficial insects that will eat pests that would otherwise harm tomato plants.

Can I plant zucchini next to tomatoes? ›

Zucchini and tomatoes can be grown as close neighbors and will make satisfactory companion plants. Both vegetables thrive in the same environmental conditions, so a garden plot that is ideal for one plant is therefore ideal for the other. They both need a location with full sun and benefit from nutrient-rich soil.

What not to plant next to peppers? ›

Brassicas: Almanacs and home gardeners recommend avoiding planting brassicas (cabbage, broccoli, kale, collards, cauliflower) near peppers because they require different soil acidity levels and can deter pepper plant growth.

Is coffee grounds good for tomato plants? ›

In a compost pile, coffee grounds decompose and break down, mingling with other organic matter like vegetable scraps, leaves, and grass clippings. This process creates a nutrient-rich compost that is much safer and more beneficial for tomato plants.

Can cucumbers and tomatoes be planted together? ›

Tomatoes and cucumbers can be grown together successfully, and there are actually some benefits to planting them together. Both plants have similar growing needs when it comes to sunlight, soil conditions, and watering. And if space is at a premium, interplanting the two will allow you to get more out of your garden.

What is the secret to growing good tomatoes? ›

Like many vegetables, tomatoes prefer a goldilocks soil that is moisture retentive yet well drained and, of course, rich in nutrients. The very best way to achieve that is simply to add plenty of well-rotted organic matter to the surface of your soil in the weeks or months before planting.

What can I add to my garden for tomatoes? ›

Compost and composted manure are great additions to the soil for tomatoes and lots of other plants. Compost adds basic nutrients and improves soil structure. Composted manure provides nutrients all season long. Composted manure: This provides a slow release of nutrients over the growing season.

Can I plant cucumbers and tomatoes together? ›

Cucumbers and tomatoes can be planted by each other as they share similar growing habits and therefore you can grow tomatoes by cucumbers. Greg Volente from Greenhouse Today explains that: 'Cucumbers and tomatoes are two vigorous growers in a spring garden. They're both vining plants and share similar basic needs.

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