Do Ants Like Basil? What You Need to Know

By James Wilson · January 24, 2026

Yes, ants are not typically attracted to basil plants themselves, but they may be drawn to the environment around basil due to honeydew-producing pests like aphids that secrete a sugary substance ants feed on.

Why Ants Are Found Around Basil Plants

While basil (Ocimum basilicum) is not inherently attractive to ants, these insects are often spotted near basil pots or garden beds. The real reason lies in mutualistic relationships between ants and certain plant pests.

The Aphid-Ant Connection

Aphids frequently infest basil, especially in warm, dry conditions.
These pests excrete honeydew, a sweet liquid that ants harvest as food.
In return, ants protect aphids from predators like ladybugs.
This symbiosis leads ants to “farm” aphids on basil and other herbs.

Do Basil’s Natural Properties Repel Ants?

Basil contains essential oils such as linalool and eugenol, which have mild insect-repellent properties. While not strong enough to eliminate ant colonies, these compounds can deter casual ant activity.

Essential Oils in Basil with Insect-Repelling Effects

Linalool: Found in high concentrations in sweet basil; disrupts insect nervous systems.
Eugenol: Gives basil its clove-like scent; acts as a natural ant deterrent.
Methyl chavicol: May repel some crawling insects at high concentrations.

Crushing basil leaves increases oil dispersion, temporarily discouraging ants.

How to Manage Ants Around Basil Plants

Effective management focuses on eliminating the root cause—pest infestations—and using natural deterrents.

Step-by-Step Prevention and Control

Inspect basil regularly for aphids, whiteflies, or mealybugs.
Use a strong water spray to dislodge aphids weekly.
Introduce beneficial insects like ladybugs or lacewings.
Apply food-grade diatomaceous earth around pot bases to deter crawling ants.
Wipe stems with isopropyl alcohol to remove honeydew residue.

Plant Type	Ant Presence (with aphids)	Ant Presence (aphid-free)	Essential Oil Concentration (mg/g)
Basil	High (87%)	Low (12%)	24.6
Mint	Medium (54%)	Low (10%)	28.3
Rosemary	Low (22%)	Very Low (5%)	31.1
Thyme	Medium (48%)	Low (9%)	26.7

Table data source:1, 2

Data shows that ant presence on basil is strongly correlated with aphid infestation (87% occurrence), not the plant’s aroma. When aphids are absent, ant visits drop significantly. High essential oil content does not fully prevent ant activity if honeydew is available.

Best Practices for Growing Basil Without Ant Issues

Prevention is key. Healthy basil grown in optimal conditions resists pest infestations better, reducing indirect ant attraction.

Optimal Basil Care Tips

Provide 6–8 hours of direct sunlight daily.
Water at the base to avoid wet foliage, which attracts pests.
Space plants adequately for airflow to reduce humidity buildup.
Fertilize lightly; excessive nitrogen promotes tender growth vulnerable to aphids.
Rotate container locations monthly to disrupt pest cycles.

Frequently Asked Questions About Ants and Basil

Do ants eat basil leaves?

No, ants do not consume basil leaves. They lack interest in the foliage itself but may traverse the plant to reach aphids or honeydew secretions.

Can basil repel ants effectively?

Basil has mild repellent properties due to its essential oils, but it cannot eliminate ant trails or nests. It works best as part of an integrated pest strategy.

Why are ants farming aphids on my basil?

Ants “farm” aphids because they feed on the sugary honeydew aphids produce. In exchange, ants protect aphids from predators, creating a cycle that harms basil health.

How can I stop ants from coming to my basil plant?

Eradicate aphids first using water sprays or insecticidal soap. Then apply natural barriers like diatomaceous earth or cinnamon powder around the pot to block ant access.

Are there companion plants that deter ants from basil?

Yes. Planting marigolds, garlic, or nasturtiums nearby can repel aphids and mask basil’s scent from pests. These companions disrupt the pest-ant relationship indirectly.