Can You Plant Mint and Basil Together? Expert Guide

By Lisa Park · May 1, 2025

If you're wondering can you plant mint and basil together, the short answer is: yes, but with caution. While both herbs thrive in similar sunlight and moisture conditions, mint's aggressive spreading nature can overcrowd and choke out basil if not properly contained. Growing them together successfully requires physical barriers or container separation to balance compatibility and prevent competition.

Understanding Mint and Basil Growing Requirements

Mint (Mentha spp.) and basil (Ocimum basilicum) are two of the most popular culinary herbs, prized for their aromatic leaves and ease of growth. Though they share several growing preferences, key differences in their growth habits make co-planting a nuanced decision.

Shared Growing Conditions

Both prefer full sun (6–8 hours daily)
Thriving in well-draining, fertile soil with a pH between 6.0 and 7.0
Require consistent moisture (but not waterlogged soil)
Grow best in USDA hardiness zones 5–11 (basil as annual in colder zones)

Potential Conflicts in Shared Space

Despite overlapping needs, these herbs differ significantly in behavior:

Mint is invasive: Spreads via underground runners (rhizomes) and can quickly dominate a garden bed.
Basil is delicate: Requires space and airflow to prevent fungal diseases like downy mildew.
Competition for resources: Mint’s rapid root expansion can steal water and nutrients from basil.

Best Practices for Planting Mint and Basil Together

To enjoy both herbs in proximity without risking basil’s health, follow these proven strategies:

Use Container Gardening

Plant mint in a pot placed within the same planter as basil. This allows visual integration while physically restricting mint’s spread. Choose containers with drainage holes and use quality potting mix.

Install Root Barriers

If planting in-ground, sink a bottomless bucket or metal barrier at least 10 inches deep around mint to limit rhizome escape.

Provide Adequate Spacing

If grown in raised beds, keep at least 18–24 inches between mint and basil plants to reduce root competition.

Monitor Watering Needs

While both like moist soil, overwatering increases basil’s susceptibility to root rot. Use mulch to retain moisture and avoid wetting foliage.

Factor	Mint	Basil
Sunlight	6–8 hours (full sun to partial shade)	6–8 hours (full sun)
Soil pH	6.0–7.0	6.0–7.0
Water Frequency (Summer)	Every 2–3 days	Every 3–4 days
Spacing	18–24 inches (aggressive spreader)	12–16 inches (clumping habit)
Height at Maturity	12–36 inches	12–24 inches
Invasiveness Risk	High (spreads via rhizomes)	None

Table data source:1, 2, 3

The data shows that while mint and basil overlap in light and soil needs, their spacing and invasiveness profiles are drastically different. Mint requires more frequent watering and significantly more space due to its spreading nature, which can indirectly stress basil if planted too closely.

Benefits of Companion Planting Mint and Basil

When managed correctly, planting mint and basil near each other offers advantages:

Pest deterrence: Both emit strong scents that repel aphids, whiteflies, and mosquitoes.
Enhanced biodiversity: Diverse herb gardens attract beneficial insects like ladybugs and pollinators.
Kitchen convenience: Growing complementary culinary herbs nearby simplifies harvesting for pesto, teas, and garnishes.

However, true companion planting implies mutual benefit — and since mint poses a threat to basil, this pairing is better described as compatible with management rather than ideal companions.

Frequently Asked Questions About Planting Mint and Basil Together

Can mint take over my entire garden if not controlled?

Yes, mint is notoriously invasive. Its rhizomes can spread up to 4 inches per week under ideal conditions, overtaking flower beds and lawns. Always grow mint in containers or with underground barriers to prevent uncontrolled spread.

Is it safe to plant basil next to mint in a raised bed?

It can be safe if you maintain at least 24 inches of separation and monitor root expansion. Consider planting mint in a submerged pot within the raised bed to contain its growth while preserving aesthetic unity.

Do mint and basil compete for nutrients?

Yes, especially in shared soil. Mint’s dense, fast-growing root system absorbs water and nutrients aggressively, which can lead to stunted basil growth or nutrient deficiencies if not managed with proper spacing or fertilization.

Can I grow mint and basil indoors together?

Yes, but only if they’re in separate pots placed on the same tray. Indoor environments limit mint’s spread, making co-location safer. Ensure both receive bright light and avoid overwatering to prevent mold and root issues.

What are the best alternatives to planting mint near basil?

Instead of mint, consider less aggressive companions for basil such as oregano, thyme, or marigolds, which enhance flavor and deter pests without competitive risks. These pairings are more sustainable in shared garden spaces.