Companion Planting Guide

Unlock the secrets of a thriving garden with companion planting! This ancient practice involves growing certain plants together to enhance growth, deter pests, and improve yields naturally. Select a plant to discover its best friends and worst enemies in the garden.

Find Your Plant's Companions

Search or Select a Plant

Information for Tomato

Good Companions:

Basil
Carrot
Marigold
Nasturtium
Borage
Garlic
Onion

Bad Companions:

Cabbage
Broccoli
Fennel
Corn
Kohlrabi

Benefits:

Improved flavor
Pest deterrence (nematodes, hornworms)
Attracts pollinators

Notes: Basil is said to improve tomato flavor. Marigolds deter nematodes. Avoid planting near brassicas.

The Science and Art of Companion Planting

Companion planting is a gardening technique that involves growing different plants in close proximity for mutual benefit. These benefits can include pest control, attracting beneficial insects, enhancing plant growth, and improving flavor. While some pairings are backed by scientific research, many are based on anecdotal evidence passed down through generations of gardeners.

How Does it Work?

Pest Deterrence: Some plants emit odors that repel harmful insects (e.g., marigolds deter nematodes).
Attracting Beneficials: Certain flowers or herbs attract predatory insects that feed on pests (e.g., dill attracts ladybugs).
Nutrient Cycling: Legumes (like beans and peas) fix nitrogen in the soil, benefiting nitrogen-hungry plants like corn.
Shade and Support: Tall plants can provide shade for sun-sensitive plants, or a natural trellis for climbing vines.
Soil Improvement: Plants with deep taproots can break up compacted soil, making it easier for other plants to grow.

Popular Companion Planting Combinations:

Main Plant	Good Companion(s)	Benefit
Tomatoes	Basil, Marigolds	Improved flavor, pest deterrence
Corn	Beans, Squash	Nutrient cycling, physical support, shade
Roses	Garlic, Chives	Aphid deterrence, disease prevention
Carrots	Rosemary, Lettuce	Deters carrot rust fly, keeps soil cool
Cabbage	Dill, Mint	Deters cabbage worms

Disclaimer: Companion planting results can vary based on local climate, soil conditions, and specific plant varieties. This guide provides general recommendations. Always observe your garden and adjust practices as needed.