Companion
Planting Guide

Basil repels aphids and whiteflies, improves tomato flavor

Marigolds deter nematodes and whiteflies

Carrots break up soil, tomatoes shade carrots

Attracts beneficial insects

Both are heavy feeders, compete for nutrients

Fennel inhibits tomato growth

Same growing conditions, peppers can benefit from tomato shade

Basil repels aphids and spider mites

Different root depths, efficient use of space

Fennel inhibits pepper growth

Onions deter carrot fly

Leeks deter carrot fly, carrots deter leek moth

Rosemary deters carrot fly with strong scent

Dill can cross-pollinate and affect carrot flavor

Beans fix nitrogen, corn provides structure (Three Sisters)

Squash shades soil, retains moisture (Three Sisters)

Beans provide nitrogen for carrots

Onions and beans inhibit each other

Beans fix nitrogen that cucumbers need

Corn provides shade and trellis

Sunflowers attract pollinators

Both susceptible to blight, can spread disease

Different growth habits, intercrop well

Radishes mature fast, mark rows for slow lettuce

Lettuce acts as living mulch

Dill attracts beneficial wasps that prey on cabbage worms

Nasturtiums attract aphids away from cabbage

Both attract slugs, increasing pest pressure

Garlic deters aphids and Japanese beetles from roses

Garlic repels spider mites

Garlic inhibits bean growth

Spinach adds nitrogen that strawberries use

Shallow and deep roots complement each other

Traditional companion planting guild

Nitrogen and structural support

Nasturtiums repel squash bugs

Both are heavy feeders, compete for resources