Want healthier tomato plants and fewer pests—without chemicals? Try companion planting!
What Is Companion Planting?
Companion planting is the simple practice of growing plants together that help each other. Some repel pests. Others improve soil or provide shade. When it comes to tomatoes, choosing the right garden friends can lead to:
- Stronger plants
- Better-tasting fruit
- Natural pest control
- Reduced disease risk
Think of it as a neighborhood garden where every plant brings something to the table.
Top 7 Tomato Companions You’ll Love
Here are beginner-friendly companion plants that pair beautifully with tomatoes—easy to grow, functional, and flavorful.
1. Basil
Why it works: Repels thrips, aphids, and whiteflies. Some gardeners say it makes tomatoes taste even sweeter!
Bonus: Adds fragrance and is perfect for pesto.
Plant 1 basil every 1–2 tomato plants. Avoid overcrowding.
2. Marigold
Why it works: Fights off nematodes, tomato hornworms, and whiteflies.
Bonus: Brightens up your garden and attracts pollinators.
Choose French marigolds for best insect-repelling results.
3. Chives or Onions
Why it works: Their strong scent confuses pests like aphids.
Bonus: Takes up very little space—great for container gardens!
Plant along the border or between tomato rows.
4. Garlic
Why it works: Acts as a natural fungicide and insect repellent.
Bonus: Helps prevent early blight and improves tomato health.
Plant a few cloves near the base of each tomato plant.
5. Carrots
Why it works: Loosens soil, improving aeration around tomato roots.
Bonus: Grows well underneath tall tomato vines.
Thin seedlings so they don’t crowd tomato roots.
6. Lettuce
Why it works: Grows quickly and helps shade the soil, reducing weeds.
Bonus: Great use of space early in the season before tomato plants fill out.
Harvest lettuce before tomatoes get too bushy.
7. Nasturtium
Why it works: Acts as a trap crop—draws aphids away from tomatoes.
Bonus: Flowers are edible and beautiful!
Let nasturtiums trail along garden edges or container sides.
What NOT to Plant Near Tomatoes
Avoid these common plants—they may stunt your tomatoes or attract harmful pests:
🚫 Cabbage family (e.g., broccoli, cauliflower)
They compete for nutrients and attract cabbage worms.
🚫 Corn
Attracts tomato fruitworm and competes heavily for nitrogen.
🚫 Potatoes
Can spread blight and attract the same pests as tomatoes.
Layout Tips for Small Gardens
- Containers: Pair cherry tomatoes with basil and chives in large pots.
- Raised beds: Alternate tomatoes with marigolds and lettuce in rows.
- Hanging baskets: Use trailing nasturtiums for vertical impact.
Real Gardeners Say…
"Basil next to my tomatoes cut my aphid problem in half!" — Jenna, Maryland
"I didn’t believe marigolds worked—until I didn’t plant them one year!" — Tom, Colorado
FAQ: Tomato Companion Planting
Q: Can I plant multiple companions in one bed?
A: Yes! Just space things out well and avoid overcrowding.
Q: Do companion plants need the same care?
A: Most of the suggested plants here enjoy full sun and moderate water—just like tomatoes.
Q: Will companion planting replace pesticides?
A: It reduces the need, but not always fully. Combine with good garden hygiene.
In Summary
Tomatoes thrive in good company. By choosing the right companions, you’ll grow healthier plants, reduce pests naturally, and enjoy a more vibrant garden.
It’s organic, beautiful, and beginner-friendly gardening at its best.
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Tag a friend who’s growing tomatoes!
Tomatoes thrive in good company—and with the right companions, you’ll enjoy healthier growth, fewer pests, and a more beautiful, productive garden.
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