Companion planting can dramatically increase the harvest from your vegetable garden — sometimes in ways that feel almost magical.
By planting certain crops together, you can naturally improve plant health, reduce pest problems, and attract beneficial pollinators. Best of all, companion planting allows you to garden without relying on chemical pesticides, making it a perfect fit for organic gardening.
I’ve found companion planting especially helpful for vegetable gardening in a cooler climate. Shorter growing seasons mean plants need every advantage they can get, and thoughtful plant pairings really do make a difference in overall yield and plant strength.
Why Companion Planting Works
Companion planting helps your garden by:
- Repelling harmful insects naturally
- Attracting bees and other pollinators
- Improving soil health and nutrient use
- Encouraging stronger growth and better yields
- Reducing the need for sprays or pest control products
When plants support each other, the entire garden becomes healthier and more resilient.
Companion Planting Chart for Vegetable Gardens
You can use the chart below as a quick reference when planning your garden beds.
| Vegetable | Good Companions | Avoid Planting Near |
|---|---|---|
| Tomatoes | Basil, marigolds, onions, carrots | Potatoes, fennel |
| Carrots | Onions, leeks, rosemary, sage | Dill |
| Cucumbers | Beans, peas, dill, radishes | Potatoes |
| Beans | Corn, cucumbers, strawberries | Onions, garlic |
| Peppers | Basil, onions, spinach | Fennel |
| Cabbage | Dill, onions, chamomile | Strawberries, tomatoes |
| Lettuce | Carrots, radishes, cucumbers | Parsley |
| Squash | Corn, beans, nasturtiums | Potatoes |
| Onions | Carrots, beets, lettuce | Beans, peas |
| Radishes | Lettuce, spinach, cucumbers | Hyssop |
Companion Planting Tips for Cooler Climates
- Group plants with similar watering needs
- Use flowers like marigolds and nasturtiums to boost pest control
- Don’t overcrowd — airflow matters just as much as companionship
- Observe your garden each season and adjust pairings as needed
Every garden is a little different, but companion planting gives your plants a strong, natural advantage.
Optional tools that make companion planting easier include reusable plant markers, garden planners, and companion planting reference charts.
Disclosure:
Content on this site is for informational purposes only and reflects personal experience and research. Gardening results can vary based on climate, soil, and growing conditions. Some links may be affiliate links, which help support this site at no additional cost to you.
Updated Feb 2026
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