Growing tomatoes is a rewarding experience, but pairing them with the right companion plants can amplify your garden’s success. Companion planting harnesses the unique abilities of plants to enhance growth, reduce pests, and improve soil health.
Below, we explore the top 10 tomato companion plants that can work wonders when planted together.
Garlic

Garlic, like chives, belongs to the allium family and is known for its pest-repelling properties. It naturally helps keep away pests that commonly affect tomatoes, such as aphids and whiteflies. Furthermore, garlic and tomatoes share similar growing conditions, making them ideal companions.
Plant garlic in the fall and let it mature through the winter. By the time you plant your tomatoes in the spring, garlic will be well-established, and its aroma will deter pests.
Asparagus
Asparagus and tomatoes are a match made in garden heaven. While tomatoes provide vertical growth, asparagus’s fern-like stalks create perfect shade, helping tomatoes thrive.
The rumors that asparagus repels pests, such as asparagus beetles, have many gardeners convinced. Even though research is still catching up, countless gardeners swear by this pairing.
Plant asparagus crowns in early spring and allow them to mature over time. Tomatoes, on the other hand, should be planted nearby but should be staked to avoid leaning on the asparagus.
Carrots

Carrots thrive under tomato vines, benefiting from the shade provided by the tomato leaves. While carrots grow deep into the soil, tomatoes stretch upward, creating a harmonious relationship between root crops and fruiting plants. The shade helps carrots survive the summer heat while keeping the soil cool.
Chives
Chives, a member of the onion family, are fantastic companions for tomatoes. Their pungent aroma repels insect pests, especially aphids and mites, which can wreak havoc on tomato plants. Additionally, chives are known to improve the flavor and growth of nearby crops.
Chives grow well in both full sun and partial shade, so they’re a versatile companion. Make sure to space them out to allow for proper air circulation.
Gooseberries
Gooseberries and tomatoes make an excellent partnership, forming a barrier against pests. Tomatoes emit alkaloids, which can repel harmful insects, and these compounds work well alongside gooseberries. Additionally, the bushy structure of gooseberries can provide natural support for tomato vines.
Ensure your gooseberries are planted in full sun and spaced properly to give each plant enough room to grow. A trellis can be beneficial to support both crops.
Green Beans

Green beans and tomatoes are a dynamic duo in the garden. Pole beans and tomatoes can share vertical space, with the bean vines winding up the tomato stakes. Green beans also fix nitrogen in the soil, thereby improving soil fertility for tomatoes.
Plant both crops together so the beans can climb while the tomato plants remain sturdy. Be sure to use a strong trellis to support both plants.
Marigolds
Marigolds are a garden staple for companion planting. Their vibrant flowers attract beneficial insects, such as pollinators, while their scent repels pests like aphids, whiteflies, and nematodes. Marigolds also help keep the soil healthy by promoting a beneficial environment for tomato roots.
Plant marigolds throughout your tomato garden, especially near the base of tomato plants. Their colorful blooms will add beauty to your garden while protecting your crops.
Nasturtium
Nasturtiums are effective in attracting pests like aphids, slugs, and whiteflies away from your tomatoes. These pest-repelling flowers also add beauty to your garden. Their trailing vines grow well alongside tomatoes, and their edible leaves and flowers can be used in salads and garnishes.
Plant nasturtiums alongside both bush and pole tomatoes. Their growth pattern helps cover the ground, protect the soil, and deter harmful insects.
Onions

Onions, whether grown as bulbs or green onions, offer numerous benefits when planted near tomatoes. Their pungent smell repels many of the same pests that harm tomatoes, including aphids and whiteflies. Onions also help retain soil moisture, benefiting both crops.
Plant onions around your tomato plants so they can grow freely. If you are growing bulb onions, be sure to give them enough space to mature.
Parsley
Parsley is an excellent companion for tomatoes, as it attracts beneficial pollinators like bees and butterflies. These pollinators help increase fruit yield by improving pollination of your tomatoes. Additionally, parsley’s vibrant green leaves complement the tomato’s flavors in the kitchen.
Plant parsley around your tomato plants, especially in spots where pollinators are needed. Its fragrant leaves will not only benefit your tomatoes but also enhance your culinary creations.
