Companion Planting Guide for Vegetables: Grow Better Together

Companion planting is the practice of growing certain plants together for mutual benefit. This time-tested technique can improve pest control, enhance pollination, maximize space, and even improve the flavor of your vegetables.

Classic Companion Planting Combinations

The Three Sisters

This Native American technique combines corn, beans, and squash. Corn provides a trellis for beans, beans fix nitrogen for corn and squash, and squash shades the soil to retain moisture and deter pests.

Tomatoes and Basil

This classic pairing isn't just for the kitchen. Basil may help repel tomato hornworms and aphids while some gardeners report improved tomato flavor when grown near basil.

Carrots and Onions

The strong scent of onions confuses carrot flies, while carrots may repel onion flies. This partnership makes excellent use of garden space as both crops grow at different soil depths.

Plants That Attract Beneficial Insects

Interplant your vegetables with flowers and herbs that attract beneficial insects:

• Marigolds: Repel nematodes and attract hoverflies
• Dill and Fennel: Attract parasitic wasps and lacewings
• Alyssum: Provides nectar for beneficial insects and attracts pollinators
• Sunflowers: Attract pollinators and provide habitat for predatory insects

Plants to Keep Apart

Some plants inhibit each other's growth or attract the same pests:

• Keep fennel away from most vegetables—it inhibits growth
• Separate beans and onions/garlic family members
• Don't plant brassicas near strawberries

Planning Your Companion Garden

Successful companion planting requires thoughtful garden planning. Consider mature plant sizes, sun requirements, and harvest timing when arranging your companions.

Integrating Companion Planting

For best results, integrate companion planting with your overall garden planning and crop rotation strategy. This holistic approach maximizes the benefits of each technique while creating a resilient, productive garden ecosystem.