Best Companion Plants for Basil in the Garden: 10 Perfect Pairings

By Priya Sharma · May 23, 2026

Best Companion Plants for Basil

Basil is one of the most versatile companion plants in the garden. Its strong aromatic oils naturally repel many common garden pests, and it can actually improve the growth and flavor of neighboring plants. Here are the top 10 companion plants that thrive when grown alongside basil.

1. Tomatoes

The classic pairing. Basil repels tomato hornworms, aphids, and whiteflies while reportedly improving tomato flavor. Plant basil between your tomato plants for maximum benefit.

2. Peppers

Basil deters aphids, spider mites, and thrips that commonly attack pepper plants. Sweet basil grows beautifully alongside bell peppers, hot peppers, and ornamental varieties.

3. Oregano

These Mediterranean herbs share similar water and sun requirements. Growing them together creates a fragrant herb garden that is both beautiful and functional.

4. Marigolds

Marigolds add an extra layer of pest protection with their strong scent. Combined with basil, they create a powerful natural pest deterrent system.

5. Asparagus

Basil repels the asparagus beetle, one of the most destructive pests for asparagus crops. Plant a row of basil near your asparagus bed for natural protection.

6. Carrots

Basil's scent masks the smell of carrot foliage, making it harder for carrot flies to find their target plants.

7. Parsley

These herbs complement each other in the garden and on the plate. Both prefer similar growing conditions and can share the same garden bed.

8. Sage

Sage and basil have complementary pest-repelling properties. Sage deters cabbage moths while basil handles aphids, creating broad-spectrum natural protection.

9. Borage

Borage attracts beneficial pollinators while basil repels pests. Together they create an ideal environment for vegetable production.

10. Lettuce

Basil provides light shade for heat-sensitive lettuce in hot weather, while lettuce acts as a living mulch keeping basil's roots cool and moist.

Plants to Avoid Near Basil

Do not plant basil near rue (Ruta graveolens) as they inhibit each other's growth. Some gardeners also report poor results when planting basil near sage in very close proximity, though moderate separation usually works fine.