Tomatoes are one of the most rewarding crops to grow, but they’re also magnets for pests, diseases, and nutrient competition. That’s why many experienced gardeners rely on companion planting, a simple technique that pairs tomatoes with beneficial plants that can improve growth, attract pollinators, deter pests, and make the most of garden space.

The right companions won’t magically double your harvest, but they can help create healthier growing conditions and stronger plants. If you want bigger harvests and fewer problems in the garden, consider planting these companions near your tomatoes this season.

Borage

Borage is a pollinator powerhouse that attracts bees and other beneficial insects to tomato beds. Its vibrant blue flowers bloom for months, increasing pollinator activity and supporting a healthier, more productive garden.

Basil

Basil is one of the most popular companion plants for tomatoes, and for good reason. Its aromatic foliage may help deter pests like aphids while attracting pollinators, and many gardeners swear that tomatoes and basil thrive when grown side by side.

Marigolds

Marigolds are often planted around tomato beds because their bright flowers attract beneficial insects that help keep pest populations in check. They may also help deter certain unwanted garden pests, making them a favorite companion in vegetable gardens.

Chives

Chives produce fragrant foliage that can help discourage aphids, mites, and other small insects from settling near tomato plants. Their purple pom-pom blooms also attract bees and other pollinators that support a healthy garden ecosystem.

Lettuce

Lettuce makes excellent use of the shaded space beneath taller tomato plants. Its leafy growth helps cover bare soil, reducing weed growth and helping the ground retain moisture during hot summer weather.

Parsley

Parsley serves as a living mulch beneath tomato plants and attracts beneficial insects when allowed to flower. Ladybugs and other natural predators are often drawn to parsley blooms, helping reduce populations of common tomato pests.

Cilantro

When cilantro flowers, it attracts tiny beneficial insects that prey on troublesome garden pests. Its strong scent may also help confuse or repel insects that would otherwise target tomatoes and other vegetables.

Thyme

Thyme’s low-growing habit makes it an excellent companion for tomatoes because it helps cover exposed soil and suppresses weeds. The tiny flowers are highly attractive to pollinators and beneficial insects throughout the growing season.

Carrots

Carrots and tomatoes make good neighbors because they use different parts of the soil profile. While tomatoes grow above ground, carrots loosen the soil below, improving aeration and making better use of available garden space.

Radishes

Radishes grow quickly and can be harvested long before tomato plants reach their full size. Their leafy growth shades the soil early in the season, helping reduce weeds while maximizing productivity in the garden.

Nasturtiums

Nasturtiums are often grown as a trap crop because they attract aphids away from tomatoes and other vegetables. Their colorful flowers also draw pollinators and beneficial insects while adding beauty to the garden.