Companion Planting for Courgettes: Discovering the Best and Worst Neighbors for a Thriving Harvest


When it comes to growing courgettes, companion planting can play a vital role in their overall health and productivity. By choosing the right plants to grow alongside your courgettes, you can create a symbiotic relationship that benefits both crops. In this article, we will discuss some of the best and worst companions for courgettes, as well as provide tips and links for successful planting.

First off, let’s talk about the plants that make great companions for courgettes. Marjoram, fennel, and chamomile are all excellent choices. Marjoram, in particular, is known to attract ladybugs, which are natural predators of certain pests that commonly target courgettes. Fennel, on the other hand, attracts beneficial insects and can help deter unwanted pests like aphids. Chamomile offers similar benefits, attracting beneficial insects while also acting as a natural insecticide.

Another great companion for courgettes is clover. This ground cover not only suppresses weeds, but it also provides nitrogen to the soil, benefiting the courgette plants. By planting clover alongside your courgettes, you can create a nutrient-rich environment that promotes healthy growth.

However, it’s also important to be aware of the plants that can be detrimental to your courgettes. Tomatoes and potatoes, for example, should not be planted near courgettes. These plants are both susceptible to similar pests and diseases, increasing the risk of cross-contamination. Additionally, growing courgettes near these plants can lead to competition for nutrients and sunlight.

Nasturtiums are another plant to avoid planting near your courgettes. While they are known to deter pests like aphids and whiteflies, nasturtiums can also attract cucumber beetles, which can be problematic for courgette plants.

In conclusion, choosing the right companions for your courgettes is crucial for their success. Good companions, such as marjoram, fennel, and clover, offer numerous benefits including pest control and nutrient enrichment. On the other hand, bad companions like tomatoes, potatoes, and nasturtiums can increase the risk of pests and diseases. By carefully considering your planting options, you can ensure a healthy and fruitful courgette harvest.


1. “Companion Planting with Courgettes.” Plantura. [Link]

2. Dave. “Companion Planting: Three Sisters Garden Guide.” Grow Organic. [Link]

3. “Companion Planting: The Ultimate Guide.” Honey, The Gardener’s Best Friend. [Link]

4. “Companion Planting Vegetables.” Seed Savers Exchange. [Link]

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Zucchini Companion Plants for the Home Garden

When it comes to growing courgettes (or zucchini) in your home garden, choosing the right companion plants can make all the difference. Companion planting is a technique that involves placing certain plants next to each other to promote their growth, health, and overall productivity. In this article, we will explore some popular companion plants for courgettes that you should consider for your garden.

1. Nitrogen-Fixing Plants

  • Clover: Clover is a nitrogen-fixing plant that can help improve the soil quality by adding nitrogen, an essential nutrient for plant growth. Planting clover as a ground cover around your courgette plants can provide them with the nitrogen they need.
  • Beans: Beans are another nitrogen-fixing plant that can benefit courgettes. Planting beans near your courgette plants can help enrich the soil with nitrogen and improve the overall health and productivity of your zucchini plants.

2. Pest-Repelling Plants

  • Dill: Dill is a great companion plant for courgettes because it attracts beneficial insects that prey on common pests like aphids, which can damage courgette plants. Planting dill near your courgettes can help control pest populations naturally.
  • Marigold: Marigold is known for its ability to repel harmful nematodes and other pests. Planting marigold near your courgette plants can help protect them from nematode damage and other pest infestations.

3. Nutrient-Sharing Plants

  • Borage: Borage is a popular companion plant for courgettes because it accumulates potassium and calcium, two important nutrients for plant growth. Planting borage near your courgettes can help improve their overall health and productivity.
  • Mint: Mint is a great companion plant for courgettes because it repels harmful pests like aphids and flea beetles. Additionally, planting mint near your courgettes can help deter fungal diseases often associated with courgette plants.

4. Sun-Loving Plants

  • Sunflowers: Sunflowers are not only beautiful, but they also provide shade and attract beneficial insects to your garden. Planting sunflowers near your courgettes can help provide shade and shelter for your zucchini plants during the hot summer season.
  • Tomatoes: While courgettes and tomatoes are not the best companions due to their competition for resources, they can still be planted together with a few considerations. Tomatoes prefer a sunnier spot, so planting them near the taller courgette plants can help create a microclimate where both plants can thrive.

By incorporating these companion plants into your garden, you can create a healthy and thriving environment for your courgette plants. Remember to check with local farmers or gardening experts for more specific companion plant suggestions that are suitable for your region and growing season. Happy gardening!

What is companion planting

Companion planting is the practice of growing different plants together in a way that creates a mutually beneficial environment. By carefully selecting which plants to grow side by side, gardeners can enhance their crops’ growth, repel pests, attract beneficial insects, and improve overall plant health.

Companion planting is based on the idea that certain plants have natural affinities or repellent properties when grown near each other. This can be due to factors such as scent, root exudates, or shading. For example, planting zucchini (courgettes) next to okra can be helpful because okra plants provide shade to the zucchini vines, helping them thrive in hot weather. Similarly, growing lavender near courgette plants can repel pests and attract beneficial insects.

There are several recognized companions for courgettes, including onions, garlic, and borage. These plants can help deter pests and improve the flavor of courgettes. On the other hand, courgettes should not be planted near potatoes or fennel, as they can compete for nutrients and hinder each other’s growth.

Knowing which plants are good companions for courgettes can greatly increase your garden’s success. By interplanting compatible plants, you can create a diverse and productive vegetable garden.

Companion planting is not only beneficial for courgettes but for a wide range of other crops as well. For example, many gardeners grow basil near tomatoes to improve their flavor, or marigolds near beans to repel pests. The possibilities are endless.

When practicing companion planting, it’s important to consider the needs of each plant. Plants in the same family, such as courgettes (Cucurbita pepo) and hubbard squash (Cucurbita maxima), may have similar needs and make good companions. Similarly, crops with different root depths or growth habits can be grown together without competing for resources.

There are plenty of resources available online and in gardening books that provide comprehensive lists of companion plants. However, it’s also important to experiment and observe your own garden to determine which companions work best for your specific growing area and conditions.

In conclusion, companion planting can be a helpful tool in the garden. By strategically planting compatible plants, you can create a healthier and more productive garden, while also reducing the need for pesticides and chemical fertilizers. Remember, as the old saying goes, “you’re not only growing plants, you’re growing a whole world of bacteria, fungi, and helpful insects!”

Benefits of companion planting

Companion planting is the practice of planting different types of plants together for their mutual benefit. When it comes to courgette companion planting, there are several plants that can be helpful for growing healthy courgette crops. Here are some of the benefits of companion planting:

  • Increased biodiversity: Planting a variety of plants in your garden encourages a diverse ecosystem. Different plants attract different insects and animals, which can help control pests and pollinate the crops.
  • Nutrient sharing: Some plants, like clover, can fix nitrogen in the soil, which is beneficial for courgettes. Squash and borage also have deep roots that can break up the soil and bring nutrients closer to the surface, making them more available to the courgette plants.
  • Pest control: Certain companion plants can help repel pests that are common to courgettes, such as marigold. Marigold draws pests like whitefly away from courgettes, therefore protecting them from infestations. This can reduce or eliminate the need for pesticides.
  • Improved pollination: Bees and other pollinators are attracted to some companion plants, such as sunflowers and borage. By planting these alongside your courgettes, you can increase the chances of successful pollination and thus improve fruit set.
  • Managing weeds: Planting companion plants like clover, beans, and marjoram can act as living mulch to suppress weed growth. They compete with weeds for sunlight, water, and nutrients, reducing the need for manual weeding.

These are just a few of the benefits that come with courgette companion planting. By carefully selecting the right companion plants and interplanting them with your courgettes, you can create a thriving and productive garden. Remember to consider the specific needs of your courgette plants and choose companions that will offer the most benefit.

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Dr Heidi Parkes

By Dr Heidi Parkes

Senior Information Extension Officer QLD Dept of Agriculture & Fisheries.