Tomatoes are the pride of the summer garden—but they don’t thrive alone. Companion planting can help your tomatoes grow stronger, taste sweeter, and resist pests naturally. Here are ten proven partner pairings to boost your harvest.
1. Basil
Basil and tomatoes are classic companions. The aromatic oils in basil help repel aphids, whiteflies, and tomato hornworms while enhancing the fruit’s flavor.
2. Marigolds
Marigolds emit a scent that deters nematodes and other harmful insects. Plant them in borders around tomato beds for a natural pest barrier.
3. Garlic
Garlic’s sulfur compounds help prevent fungal diseases and repel spider mites. Interplant garlic cloves between tomato rows for double duty—protection and flavor.
4. Chives
Chives discourage aphids and improve tomato taste subtly. Their small purple blooms also attract beneficial pollinators.
5. Carrots
Carrots loosen the soil around tomato roots, improving aeration and water absorption. They don’t compete heavily for nutrients either, making them great underground allies.
6. Lettuce
Lettuce grows quickly and shades the soil, preserving moisture for thirsty tomato plants. This combo works especially well in raised beds.
7. Nasturtiums
Nasturtiums lure away aphids and whiteflies, acting as a “trap crop.” Their bright flowers also make the garden look cheerful.
8. Borage
Borage attracts pollinators and beneficial predators like hoverflies. It’s also said to improve tomato growth and repel the dreaded tomato hornworm.
9. Onions
Onions help deter pests such as slugs and cutworms. Their shallow roots won’t compete with deep-rooted tomatoes.
10. Peppers
Peppers and tomatoes share similar needs—plenty of sunshine, warmth, and watered consistency. Growing them together simplifies care and creates a productive patch.
With the right companions, your tomato plants can flourish naturally—producing vibrant, flavorful fruit with fewer chemicals and less effort. A smart companion plan makes every plot more resilient and delicious.
