Companion Planting: How to Grow a Thriving, Balanced Garden

A successful garden isn’t just about planting your favourite crops, it’s about creating a balanced ecosystem where plants support each other’s growth, protect against pests, and improve soil health. This method, known as companion planting, has been used for centuries to naturally enhance productivity and reduce reliance on chemicals.

If you’ve ever struggled with pests, poor harvests, or nutrient-deficient soil, companion planting might be the simple solution you need. Here’s how to make the most of this powerful gardening technique.

What is Companion Planting?

Companion planting is the strategic placement of different plants together to create beneficial relationships. Like plant best friends! Some plants act as natural pest deterrents, while others improve soil quality, attract pollinators, or provide structural support to weaker plants.

By understanding which plants grow well together (and which ones don’t), you can boost yields, reduce plant diseases, and cultivate a healthier, more self-sustaining garden. Win win!

The Benefits of Companion Planting

Pest Control – Some plants repel common pests, reducing the need for chemical insecticides.
Pollination Boost – Flowers and herbs attract beneficial pollinators like bees and butterflies.
Nutrient Sharing – Certain plants fix nitrogen in the soil, making nutrients more available to others.
Space Efficiency – Companion plants can be layered to maximise growing space.
Improved Flavour & Yield – Some combinations enhance the flavour of crops and promote more productive harvests.

Best Companion Plant Pairs

Here are some classic companion planting combinations that work well in vegetable and herb gardens:

 

Carrots & Onions

Why? Onions repel carrot flies, and carrots help aerate the soil for onions.

Tomato & Basil

Why? Basil repels whiteflies and aphids, while enhancing the flavour of tomatoes.

Corn, Beans and Pumpkin ('The Three Sisters')

Why? Corn provides a structure for beans to climb, beans fix nitrogen in the soil and squash shades the ground to prevent weeds. Quite the team!

Lettuce & Chives

Why? Chives deter aphids and improve lettuce growth.

Cucumbers & Nasturtiums

Why? Nasturtiums deter pests like aphids and cucumber beetles.

Strawberries & Thyme

Why? Thyme repels worms and slugs, protecting strawberry plants.

Plants That Shouldn't Grow Together

Just as some plants benefit each other, others can hinder growth when planted nearby. Here are some common mismatches to avoid:

🚫 Tomatoes & Cabbage – Cabbage family plants stunt tomato growth.
🚫 Onions & Beans – Onions release compounds that inhibit bean growth.
🚫 Potatoes & Carrots – Compete for nutrients and attract similar pests.
🚫 Dill & Carrots – Can cross-pollinate and negatively affect growth.

Using Companion Planting for Pest Control

If pests are a problem in your garden, try planting natural repellents instead of using chemicals. Here’s a quick guide:

Aphids? Plant marigolds, chives, or nasturtiums.
Grasshoppers? Plant coriander or calendula.
Mosquitoes? Plant lavender and rosemary.
Slugs & Snails? Use basil and thyme.

By incorporating these natural pest repellents, you’ll create a healthier, chemical-free growing space.

Designing a Balanced Garden

Companion planting is more than just placing plants together, it’s about creating a harmonious, self-sustaining garden where plants work together to thrive. Whether you’re growing vegetables, herbs, or flowers, thinking about compatibility can make a huge difference in plant health, yield, and overall garden success.

Try implementing some of these companion planting techniques and watch your garden flourish!