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    Home » Trending

    Published: Jun 9, 2025 by Kristen Wood · This post may contain affiliate links. If you make a purchase through links on our site, we may earn a commission. ·

    9 Companion Plants That Supercharge Your Tomato Harvest

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    Tomatoes are a garden favorite, but did you know the right neighbors can make them even better? Companion planting is an age-old gardening technique where certain plants help each other thrive. When it comes to tomatoes, strategic companions can boost flavor, growth, and even disease resistance.

    Skip the chemicals and let nature do the work. These 9 plants are the ultimate tomato sidekicks you’ll want growing nearby.

    Basil

    A bunch of fresh basil leaves tied together with twine, isolated on a white background.
    Photo Credit: Photomyheart/Deposit Photos

    Basil doesn’t just enhance your pasta—it helps your tomatoes grow stronger and taste better. It naturally repels insects like aphids and hornworms. Plus, the two love the same sun and water conditions.

    Marigolds

    Marigold flowers with vibrant orange and yellow petals bloom among green leaves in a garden setting.
    Photo Credit: CamomileLeyla/Deposit Photos

    These cheerful flowers act like a tomato bodyguard. Their strong scent keeps nematodes, whiteflies, and other pests away. Plant them as a colorful border around your tomato beds.

    Borage

    Close-up of several blue star-shaped borage flowers and fuzzy purple buds against a soft green background.
    Photo Credit: Kieran Murphy/Unsplash

    This blue-blooming herb attracts pollinators and deters tomato hornworms. It also improves soil health by adding trace minerals. Borage self-seeds easily, so it’ll return each season.

    Nasturtiums

    Bright orange nasturtium flowers with rounded green leaves growing densely against a plain background.
    Photo Credit: Anthony Rae/Unsplash

    Nasturtiums work as a trap crop, luring aphids and whiteflies away from your tomatoes. They also sprawl beautifully and can be eaten in salads. Grow them around the base of your plants for full-circle benefits.

    Chives

    A bundle of fresh chives tied with a blue rubber band, isolated on a white background.
    Photo Credit: vvoennyy/Deposit Photos

    Chives repel aphids and fungal diseases while taking up little space. Their mild onion scent is offensive to many pests. Bonus: their purple blooms attract bees and beneficial insects.

    Calendula

    Bright orange marigold flower with layered petals and a green stem, set against a blurred gray background.
    Photo Credit: Oksana Gogu/Unsplash

    Often called “pot marigold,” calendula draws in pollinators and predatory insects like ladybugs. It helps balance the tomato ecosystem naturally. The petals are also edible and beautiful in salads.

    Carrots

    A wicker basket filled with long, slender orange carrots with green tops still attached.
    Photo Credit: Hana Mara/Pexels

    Carrots can grow in the shallow spaces between tomato plants without competing for resources. They help keep the soil loose and aerated. Their foliage also offers a bit of ground-level protection.

    Lettuce

    Rows of green lettuce plants growing in a white hydroponic system indoors.
    Photo Credit: Jatuphon Buraphon/Pexels

    Lettuce grows quickly in the shade beneath tomato plants. It suppresses weeds and acts as a living mulch to retain soil moisture. This combo maximizes garden space and productivity.

    Parsley

    A bunch of fresh curly parsley with bright green leaves, bound together by a small tie, on a white background.
    Photo Credit: tegrafik/Pixabay

    Parsley attracts beneficial insects like hoverflies, which feed on aphids. It won’t crowd out tomatoes and grows well in partial shade. Harvest it regularly for both culinary and companion benefits.

    With the right companions, your tomato plants can truly thrive. These helpful herbs, flowers, and veggies not only supercharge your harvest but also make your garden more beautiful and balanced.

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    About Kristen Wood

    Kristen is a plant lover, gardener, certified functional nutritional expert, cookbook author, writer, and photographer. Her work has been featured in many online and print publications including Willow & Sage Magazine, Forbes, NBC, New York Daily News, Healthline, MSN, Elle, Yoga Journal, and many more. She is also a syndicated writer for The Associated Press.

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    A close up of a woman's face in the sun, radiating with the gentle glow of schisandra and bergamot home.

    About Kristen Wood

    Kristen is a plant lover, gardener, certified functional nutritional expert, cookbook author, writer, and photographer. Her work has been featured in many online and print publications including Willow & Sage Magazine, Forbes, NBC, New York Daily News, Healthline, MSN, Elle, Yoga Journal, and many more. She is also a syndicated writer for The Associated Press.

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