Can You Plant Tomatoes With Leeks?
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GardenSays
tomatoes + leeks: Yes — plant them together.
- Verdict
- Good companions
- Evidence tier
- Folklore — insufficient evidence
- Pairs rated
- 41
Another compact allium — same deterrent tradition as onions, zero competition for light.
Typical estimate · 2 verified sources · Checked 2026-07-15 · How we decide
Why
Layout: Interplant along edges, 6 inches from stems.
Evidence note: this is a traditional companion-planting story, not an established scientific mechanism — treat the specific benefit claim as unproven, even though the pairing itself is harmless.
- A long-standing companion-planting story (often a claimed scent/repellent effect) with no established scientific mechanism for this specific pairing. Treat as garden tradition, not proven fact.
- Companion planting tweaks the odds — spacing, rotation, and airflow still matter more than any pairing.
When this doesn't apply
- If either plant has had disease problems in this spot before, rotation history outweighs the pairing benefit.
How this was calculated
- 1. Pairing lookupGood companionsSource guidance
Tomato × Leeks: rated 'good' in the GardenSays pairing table.
- 2. Folklore — insufficient evidenceGardenSays estimate
A long-standing companion-planting story (often a claimed scent/repellent effect) with no established scientific mechanism for this specific pairing. Treat as garden tradition, not proven fact.
Data sources
- University of Minnesota Extension — Companion planting in home gardens — Some companion effects (trap crops, pollinator attraction, nematode suppression by marigolds) are documented; many traditional pairings lack formal evidence. (checked 2026-07-15)
- University of Minnesota Extension — Growing tomatoes in home gardens — Avoid planting tomatoes near potatoes (shared blight) or where related crops grew the previous year. (checked 2026-07-15)
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People also ask
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Keep away from tomatoes: Potatoes, Corn, Cabbage, Broccoli, Kale, Fennel, Raspberry. Use caution with: Peppers, Eggplant, Strawberries, Mint, Rosemary, Sage, Lavender, Sunflower, Dill, Tomatillo, Jalapeno. Calculate yours →
What are the best tomato companion plants?
Best companions for tomatoes: Basil, Marigold, Onions, Garlic, Lettuce, Spinach, Asparagus, Nasturtium, Borage, Zinnia, Radish, Leeks. Calculate yours →
How far apart should tomatoes be planted?
Your 8×4 ft raised bed fits 8 tomatoes at 21-inch spacing. Calculate yours →
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