Lettuce Companion Planting Guide

20 beneficial companions • 3 plants to avoid

20
Beneficial
3
Avoid
6
Research-Backed

✅ Beneficial Companions

Aromatic Flowers Zinnia Cosmos Alyssum

Attracts predatory insects, commercial_agriculture_application

Attracts predatory insects, commercial_agriculture_application

🌿 Traditional
Beet

Different root depths, Extension, Horticultural

Different root depths, Extension, Horticultural

📚 Extension
Broccoli And Cauliflower Brassica Oleracea

competition, field_trial

competition, field_trial

🌿 Traditional
Carrot

Living mulch, Traditional

Living mulch, Traditional

🌿 Traditional
Chamomile And Yarrow

beneficial insect attraction, traditional

beneficial insect attraction, traditional

🌿 Traditional
Garlic

Suppresses weeds, extension

Suppresses weeds, extension

🌿 Traditional
Legume Family

nitrogen fixation, extension

nitrogen fixation, extension

🌿 Traditional
Nasturtium

Pest deterrence, Field Trial

Pest deterrence, Field Trial

🔬 Field Trial
Green Onion

Increased yield, Field Trial

Increased yield, Field Trial

🔬 Field Trial
Garlic Chives

Improved soil environment, Field Trial

Improved soil environment, Field Trial

🔬 Field Trial
Tomato

Shading, Field Trial

Shading, Field Trial

🔬 Field Trial
Alfalfa

Nitrogen fixation, Lab Study

Nitrogen fixation, Lab Study

🧪 Lab Study
Thyme

Pest deterrence, Field Trial

Pest deterrence, Field Trial

🔬 Field Trial
Pea Pisum Sativum

Weed suppression, traditional

Weed suppression, traditional

🌿 Traditional
Radish Turnip Rutabaga Brassica Root Vegetables

Space optimization, Trap Cropping, Traditional

Space optimization, Trap Cropping, Traditional

🌿 Traditional
Soybean Cowpea Mung Bean Warm Season Legumes

Nitrogen fixation, Shade, field_trial

Nitrogen fixation, Shade, field_trial

🌿 Traditional
Spinach And Swiss Chard

ground cover, space maximization

ground cover, space maximization

🌿 Traditional
Strawberry

camouflage from birds, traditional/observational

camouflage from birds, traditional/observational

🌿 Traditional
Sunflower

Shade, Pest Management, extension

Shade, Pest Management, extension

🌿 Traditional
Unknown

General, Traditional

General, Traditional

🌿 Traditional

❌ Plants to Avoid

Marigold

Attracted cabbage looper, Field Trial

Attracted cabbage looper, Field Trial

🔬 Field Trial
Basil

Attracted cabbage looper, Field Trial

Attracted cabbage looper, Field Trial

🔬 Field Trial
Parsley Cilantro Dill Apiaceae Herbs

Competition for resources, potential allelopathy, Extension

Competition for resources, potential allelopathy, Extension

📚 Extension

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