How it works

• Pest Deterrence/Confusion: Strong scents from herbs like mint, chives, or alliums can mask host plants from pests, while flowers like marigolds attract predatory insects (e.g., ladybugs) or repel pests (e.g., nasturtiums deter cucumber beetles).
• Nutrient Cycling: Legumes (beans, peas) fix nitrogen in the soil, benefiting heavy feeders like corn and squash.
• Physical Support/Shade: Tall plants (corn, beans) can provide trellises or shade for sun-sensitive plants (lettuce, squash).
• Soil Health: Ground covers from companion plants help prevent erosion, retain moisture, and suppress weeds.

Examples of beneficial pairings

• Tomatoes: Basil (improves flavor), marigolds (repel nematodes), carrots, onions.
• Lettuce: Mint (deters slugs), chives/garlic (repel aphids), radishes, carrots, peas.
• Zucchini/Squash: Marigolds, nasturtiums, oregano, radishes, zinnias, buckwheat.
• Carrots: Rosemary, sage, onions, chives, lettuce, radishes (radishes break up soil and are harvested before carrots need space).