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🍅 Tomato companion plants

Tomatoes are the most popular home-grown crop. The right neighbours help deter pests and make better use of bed space, while the wrong ones share diseases.

Sun
Full sun, 6–8+ hours
Water
Deep, consistent watering 1–2× per week
Spacing
45–60 cm (18–24 in)
Harvest
60–85 days from transplant

Good companions for tomato

  • 🌿 Basil

    Its strong scent helps confuse thrips and whiteflies, and both enjoy the same warm, sunny spot.

  • 🥕 Carrot

    Roots grow below tomato canopies without competing, making use of otherwise empty soil.

  • 🧅 Onion

    The pungent smell helps mask tomatoes from aphids and other sap-sucking pests.

  • 🧄 Garlic

    Helps deter aphids and spider mites around the base of plants.

  • 🌼 Marigold

    French marigolds attract hoverflies and may help suppress root-knot nematodes.

  • 🥬 Lettuce

    A quick crop that fits in the shade between young tomato plants.

What not to plant with tomato

  • 🥔 Potato

    Same family; they share early and late blight and attract the same beetles.

  • 🌽 Corn

    Corn earworm and tomato fruitworm are the same pest, so planting together concentrates it.

  • 🥬 Cabbage

    Brassicas and tomatoes compete heavily for nutrients and tend to stunt each other.