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Basil and cilantro are companion plants that grow beautifully together in the same garden bed.
If you’ve been wondering whether basil and cilantro companion plant well, the answer is a resounding yes, and they can boost each other’s growth when given the right conditions.
You can plant basil and cilantro as companions because they share similar water needs but thrive in slightly different light, which makes them perfect partners for intercropping.
In this post, we’ll explore why basil and cilantro are companion plants, the best way to grow them side by side, and common mistakes to avoid so your herb garden flourishes.
Let’s dig into the wonderful world of basil and cilantro companion planting.
Why Basil and Cilantro Are Companion Plants
The reason basil and cilantro are companion plants comes down to their complementary growth habits and pest-repelling abilities.
These two herbs don’t compete for the same resources, and they actually support each other in several important ways.
1. They Share Similar Water Requirements
Basil and cilantro companion plant success starts with their love for consistently moist soil.
Both herbs need about one inch of water per week, which means you can water them together without worrying about overdoing it for one or underwatering the other.
This shared need simplifies your watering routine and makes basil and cilantro companion planting a low-maintenance choice for busy gardeners.
When the top inch of soil feels dry, it’s time to water both herbs, and they’ll both thank you with lush, flavorful leaves.
2. Cilantro Attracts Beneficial Insects
One of the biggest perks of basil and cilantro companion planting is cilantro’s talent for attracting predatory insects that feast on common garden pests.
Cilantro produces tiny white flowers that lure hoverflies and parasitic wasps, both of which prey on aphids and other bugs that love to munch on basil leaves.
So by pairing basil and cilantro as companions, you’re essentially hiring a natural pest control team that protects your basil without any chemical sprays.
3. Basil Repels Unwanted Pests
Basil and cilantro companion plants work both ways because basil’s strong aromatic oils help repel thrips, mosquitoes, and flies.
These pests can damage cilantro’s delicate foliage and stunt its growth if left unchecked.
When basil and cilantro companion plant together, the basil acts as a fragrant shield, keeping many destructive insects at bay while the cilantro grows tall and untroubled.
4. They Have Different Root Depths
Basil and cilantro companion plants don’t fight for underground space because their roots grow at different depths.
Cilantro develops a shallow, fibrous root system that stays near the soil surface, while basil sends down deeper taproots to access moisture and nutrients further down.
This root stratification means basil and cilantro companion planting maximizes your garden’s soil efficiency, allowing both herbs to thrive in close quarters.
5. Cilantro Provides Living Mulch
Cilantro’s low, spreading rosette of leaves acts as a living mulch around the base of basil plants.
This natural ground cover shades the soil, reduces evaporation, and suppresses weed growth that could steal nutrients from your basil.
So when you garden with basil and cilantro as companion plants, you’re also reducing your weeding chores while keeping the soil cool and moist for both herbs.
Best Practices for Growing Basil and Cilantro Companions
While basil and cilantro companion plant wonderfully, there are a few key practices that ensure both herbs reach their full potential.
Follow these tips to create the perfect environment for your basil and cilantro companion garden.
1. Plant Cilantro in Partial Shade
Cilantro tends to bolt, or flower and go to seed, quickly in hot afternoon sun.
To keep your cilantro producing leaves longer, plant it where it receives morning sun but afternoon shade, such as on the east side of your basil.
Basil and cilantro companion planting works best when the taller basil provides dappled shade for the cilantro during the hottest part of the day, which delays bolting and gives you more harvestable leaves.
2. Succession Sow Your Cilantro
Cilantro has a short lifespan, so basil and cilantro companion planting requires a steady supply of new cilantro seeds.
Plant a new batch of cilantro seeds every two to three weeks throughout the growing season.
This way, as one cilantro plant fades, a fresh one is ready to take its place, and your basil always has a companion plant nearby.
3. Give Them Enough Space
Even though basil and cilantro companion plants are compatible, they still need breathing room.
Space basil plants about 12 to 18 inches apart and plant cilantro between them at least six inches away from the basil stems.
Proper airflow reduces the risk of fungal diseases like powdery mildew, which can spread quickly in crowded, humid conditions.
4. Harvest Regularly to Encourage Bushier Growth
Frequent harvesting is essential for basil and cilantro companion plant success.
Pinch off basil leaves from the top to encourage branching, and cut cilantro leaves from the outer edges to promote new inner growth.
This regular harvesting keeps both herbs productive and prevents them from becoming leggy or flowering too early.
What Not to Plant Near Basil and Cilantro
Even though basil and cilantro companion plants are a winning pair, some other herbs can cause problems when placed nearby.
Avoid planting fennel near either herb, because fennel releases chemicals that inhibit the growth of many plants, including basil and cilantro.
Also, keep rue away from your basil and cilantro companion bed, as rue can stunt their growth and create a toxic environment for these tender herbs.
And while dill and cilantro look similar, they can cross-pollinate and produce seeds with less desirable flavors, so keep them separated in your garden.
So, Are Basil and Cilantro Companion Plants?
Basil and cilantro are companion plants, and they make an excellent team in any herb garden.
You can successfully plant basil and cilantro as companions because they share water needs, repel each other’s pests, and don’t compete for root space.
By following the best practices for basil and cilantro companion planting, you’ll enjoy a continuous harvest of both herbs all season long.
So go ahead and pair basil and cilantro companion plants in your garden this year, and watch them thrive together in perfect harmony.
Your salads, salsas, and pestos will never taste better than when they come from a garden where basil and cilantro grow side by side as trusted companions.