Companion Planting Chart
Some plants are better neighbors than others. Companion planting places crops near each other based on how they interact: sharing nutrients, repelling pests, attracting pollinators, or sometimes stunting each other's growth. This chart covers the most common combinations, then you can test your layout in our free garden planner, which flags companion conflicts automatically.
Combinations that work
The Three Sisters
The original companion system. Corn gives beans a structure to climb, beans fix nitrogen, and squash shades the soil.
The Pizza Garden
Everything you need for a homemade pie, and it all grows well together.
The Salad Bed
Fast-growing, compact, and mutually beneficial. Ready in weeks.
Quick rules of thumb
- Alliums help most, hurt beans. Onions, garlic, and chives assist most plants but inhibit beans and peas.
- Brassicas are picky. Keep the cabbage family away from nightshades like tomatoes and peppers.
- Fennel is a loner. It inhibits most plants. Give it its own space.
- Marigolds and nasturtiums are universal helpers. Scatter them everywhere.
- Dill is great young, problematic mature. Harvest before it goes to seed near tomatoes or carrots.
Plan your layout
Knowing what goes together is step one. Laying it out is step two. Our free planner checks companion conflicts as you drop plants into a bed.
Plan your gardenNot sure what grows in your area? Start with our zone calculator to find your USDA hardiness zone and frost dates, or browse the full plant database.