Every product is independently reviewed and selected by our editors. If you buy something through our links, we may earn an affiliate commission at no extra cost to you.
If you’ve ever tried growing cilantro in a small garden or container setup, you’ve probably noticed how unpredictable it can be. One week it’s lush and fragrant, and the next it’s bolting straight to seed or getting crowded out by stronger neighbors. Through my own years of growing cilantro on balconies, terraces, and small backyard beds, I’ve learned that what you plant near it matters more than most beginners realize.
This guide explains what not to plant with cilantro, why these combinations fail, and the best alternatives that actually help cilantro stay flavorful and productive.
Why Some Plants Don’t Belong Near Cilantro
In real gardens, companion planting isn’t just theory plants really do compete for space, water, nutrients, and even air movement. Cilantro is especially sensitive because:
• It prefers cooler temperatures • It bolts quickly when stressed • Its shallow roots dislike competition • Its scent and leaf chemistry don’t pair well with certain crops
When cilantro is planted near the wrong companions, it typically shows:
• Fast bolting • Thin, leggy growth • Reduced leaf flavor • Yellowing from nutrient imbalance • Pest issues (especially aphids or leaf miners)
The “bad companions” below are ones I’ve tested directly or seen fail repeatedly in home gardens.
Plants You Should NOT Plant With Cilantro
1. Fennel
Fennel is notorious for being a bad neighbor to almost everything, but it’s especially incompatible with cilantro.
Why fennel is a problem: • Releases chemicals that inhibit nearby plant growth • Outcompetes cilantro for nutrients • Attracts swallowtail caterpillars, which will also chew on tender cilantro foliage
In my garden, every cilantro plant within a couple feet of fennel became yellowish and stunted.
2. Dill
Dill and cilantro look similar, but they do not get along well in close quarters.
Problems with dill: • Cross-pollination confuses seed saving • They attract the same pests, making infestations worse • Dill grows taller and shades out cilantro
I’ve had cilantro bolt prematurely just from being overshadowed by fast-growing dill.
3. Mint
Mint grows aggressively and will overtake cilantro in a matter of weeks.
Why mint is a poor companion: • Spreads by runners and chokes out cilantro • Competes heavily for water • Creates a humid microclimate that encourages fungal disease
If you absolutely must grow mint, keep it in a pot preferably far away.
4. Basil
Basil loves heat. Cilantro hates it. Their environmental needs clash.
What happens when they’re grown together: • Basil’s preference for full sun warms surrounding soil • Cilantro bolts quickly in the extra heat • Watering needs don’t match (basil wants more consistent warmth and moisture)
Every time I tried this combo in containers, the cilantro bolted almost instantly.
5. Lavender and Mediterranean Herbs
This includes rosemary, thyme, oregano, sage.
Why they fail near cilantro: • These herbs need dry, lean soil • Cilantro likes slightly richer, evenly moist soil • Watering for one stresses the other
It’s a classic case of mismatched environments.
6. Crops With Large Root Systems
Tomatoes, potatoes, squash, eggplant, and corn are all bad neighbors.
Issues: • Large plants shade cilantro • Deep roots pull nutrients away from shallow-rooted cilantro • Increased humidity around large crops often leads to mildew
I once planted cilantro between tomato rows within a month the cilantro was spindly and flavorless.
What You Should Plant Near Cilantro Instead
Cilantro does best with plants that share its cool-weather preference and don’t compete aggressively.
Best companions include: • Leafy greens (lettuce, spinach, arugula) • Carrots • Onions and scallions • Garlic • Chives • Parsley • Radishes
These combinations help deter pests, maintain soil moisture, and maximize space especially in small gardens.
What You’ll Need (If You’re Replanning Your Garden)
• Quality potting mix or compost for raised beds • Separate pots for aggressive spreaders like mint • Mulch for moisture retention • Hand trowel • Labels (very useful when differentiating cilantro and young dill seedlings)
How to Replant Cilantro Successfully (If You Chose a Bad Companion)
- Choose a cooler spot morning sun, afternoon shade is best.
- Loosen the soil and add compost if needed. Cilantro dislikes compaction.
- Transplant gently. Cilantro seedlings are fragile; disturb roots as little as possible.
- Give it space. At least 6–8 inches between plants.
- Mulch lightly to keep soil cool (wood chips or straw work well).
- Water deeply but infrequently let the top inch dry first.
- Harvest often to delay bolting.
Pro Tips & Best Practices From Real Gardens
• Sow cilantro every 3–4 weeks. It’s the best way to keep steady supply. • Avoid afternoon sun in hot climates. This single adjustment prevents 70% of bolting issues. • Never plant cilantro near heat-reflective surfaces (concrete, metal railings). • Use deep pots (8–12 inches) to keep roots cool on balconies. • Don’t overfeed. Too much nitrogen causes thin, floppy stems.
One trick I swear by: grow cilantro between rows of onions. It stays cooler, and pests stay away.
FAQ
Why does my cilantro bolt so fast? Usually too much heat or sun, but poor companion planting can contribute by stressing the plant.
Can I plant cilantro next to tomatoes? No. Tomatoes shade cilantro and steal nutrients, causing weak, leggy growth.
Is it okay to grow dill and cilantro together in a big pot? I don’t recommend it. Dill grows much faster and will overwhelm cilantro.
Can cilantro grow near peppers? It can, but peppers prefer warmer soil, so cilantro may bolt sooner.
Why is my cilantro turning yellow? Often lack of nutrients or root competition common when planted near hungry crops like basil or tomatoes.
Can I grow cilantro and parsley together? Yes one of the best pairings for small garden beds and containers.
When NOT to Use Companion Planting With Cilantro
Avoid companion planting if: • You live in a hot climate and can’t control sun exposure • Your soil dries out too quickly • You’re growing in very small pots (6 inches or smaller) • Plants have drastically different watering or sun needs
Sometimes cilantro does best in its own container, especially on balconies.
Alternatives if You Made a Bad Planting Choice
If cilantro is struggling: • Move it to partial shade • Replant in a separate container • Try slow-bolt varieties like ’Delfino’ • Grow cilantro for seeds (coriander) rather than leaves
Cilantro is forgiving if it bolts, you still get coriander seeds for cooking or replanting.
Conclusion
Knowing what not to plant with cilantro is just as important as knowing what helps it thrive. Cilantro is a cool-season, shallow-rooted herb that struggles when planted near aggressive, heat-loving, or chemically incompatible neighbors like fennel, mint, basil, and large vegetable crops.
Give cilantro the right companions or its own space and it rewards you with fragrant, tender leaves for weeks instead of days. As always with home gardening, small adjustments in placement and plant pairing make a huge difference.
If you set up your cilantro with the right neighbors now, your plants will stay healthier, bolt later, and produce far better flavor all season long.







