12 Plants to Avoid Planting With Tomatoes This Season

Thinking about companion planting tomatoes this season but not sure which plants to avoid? Several plants can compete with tomatoes for nutrition or bring diseases to your garden. In this post, gardening expert Melissa Strauss lists plants to avoid growing near tomatoes this season.  

1. Broccoli

If you plan to plant broccoli and tomatoes together, know that this pairing is worse for broccoli than tomatoes. Tomatoes may win this competition, but broccoli and tomatoes are both heavy eaters, so keeping them apart would benefit both.  

2. Brussels Sprouts 

Tomatoes cannot be eaten with brassicas like Brussels sprouts. Brussels sprouts will deplete soil nitrogen, starving tomatoes. Separate tomato beds boost their prospects. Sun, water, and nitrogen-rich fertilizer are needed.  

3. Cabbage

Cabbage, another brassica vegetable, doesn't mix with tomatoes and inhibits their growth. Tomatoes and cabbage produce small fruits and little yield. Cabbage needs lots of nutrients. Tomatoes and them are heavy feeders.  

4. Cauliflower

For the same reason, tomatoes and cauliflower don't get along. Brassicas like cauliflower compete for nutrients, resulting in poor yield. Not only will cauliflower not help tomato roots retain moisture, but neither plant will benefit from this combination.  

5. Corn

This worm is sometimes called Tomato Fruitworm. This bug destroys plant fruit, making it inedible Separate these plants because they share a damaging pest. Pests will stay if there is enough food for their young and could destroy both crops.  

6. Dill

Most herbs grow well with tomatoes, but dill is unusual. Young dill helps tomatoes. Dill repels insects, therefore this combo might benefit tomatoes. Unfortunately, the pairing would not last. Dill is a bad tomato neighbor once it blossoms.  

7. Eggplant

Since they're nightshades, eggplants and tomatoes should get along. They will compete for nutrients, thus tomatoes may lose. In addition, tomatoes grow higher than eggplants, which dislike shade.  

8. Fennel

This list commonly includes fennel, an intriguing plant! Fennel is usually portrayed as a bad friend It typically causes other plants to bolt, degrades their flavor, hinders their growth, or kills them by secreting a chemical from its roots, a sort of allelopathy.  

9. Hot Peppers

In salsa, hot peppers and tomatoes go nicely, but not in gardens. Long-term, keep these apart to avoid soil blight.Plants share a garden pest. The tomato hornworm (Manduca quinquemaculata) likes both plants' foliage, therefore planting them together hurts both crops.  

10. Kale

Kale and nightshades complement each other. Kale, eggplant, and peppers get along. Big tomato plants need lots of nutrients. This hurts kale.No fixed rule. The right nutrients allow them to grow together. When planting kale with tomatoes, apply nitrogen-rich fertilizer.  

11. Kohlrabi

Kohlrabi, a brassica, makes another unpleasant tomato companion. Always remember that these plants compete with tomatoes for nitrogen.Plant these plants in separate beds with at least 3 feet of garden space.  

12. Potatoes

Since potatoes are nightshades, they compete with tomatoes for nutrients. If one plant becomes sick, you may lose both since they share diseases.Harvest season disrupts potato relationships. Potato digging harms tomato roots. Poor match.  

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