Courgettes Companion Planting Guide

What to grow alongside courgettes

February 25, 2025 | 9 min read
Courgettes and their companion plants in a garden setting

As a professional gardener based in Staffordshire, I've spent over 15 years cultivating various vegetables, including the ever-popular courgettes. Companion planting can be a game-changer in your vegetable patch, helping to improve growth, deter pests, and increase yields. Here, I'll share practical advice on what to grow alongside your courgettes, specifically tailored for our UK climate.

Quick Answer

Companion plants for courgettes include marigolds, nasturtiums, radishes, and sweetcorn. These plants help deter pests and support healthier growth.

Why Companion Plant with Courgettes?

Companion planting is a strategic way to improve the health and productivity of your vegetable garden. By placing specific plants together, you can naturally repel pests, enhance soil nutrients, and even improve pollination. For courgettes, this means a more robust plant and a better yield come harvest time.

Best Companion Plants for Courgettes

Marigolds

Marigolds are a fantastic companion for courgettes. They have a strong scent that deters aphids and other pests. Plant them around the perimeter of your courgette patch to create a natural barrier.

Nasturtiums

Nasturtiums attract aphids away from your courgettes, acting as a sacrificial plant. They also bring in pollinators, which is beneficial for courgette flowers. In the Midlands, sow nasturtiums in late spring for best results.

Radishes

Radishes grow quickly and can be planted between courgettes. They help break up the soil and improve aeration. Plus, they mature faster, so you can harvest them before the courgettes need more space.

Sweetcorn

Sweetcorn provides vertical interest and can offer some shade to courgettes during the hottest part of the day. This is particularly useful in the warmer months we occasionally experience in Staffordshire.

Planting Calendar

Timing is crucial for successful companion planting. Here’s a simple calendar to guide you:

Month Action Notes
March Start courgettes indoors Use pots on a sunny windowsill
April Plant marigolds and nasturtiums Direct sow outside if frost risk is low
May Transplant courgettes Harden off before planting outside
June Sow radishes Intercrop with courgettes

Tips for Successful Companion Planting

Here are some tried and tested tips for getting the most out of your companion planting efforts:

  • Ensure proper spacing to avoid overcrowding and ensure adequate airflow around the plants.
  • Regularly monitor for pests and diseases, especially in humid conditions common in the Midlands.
  • Rotate crops annually to maintain soil health and prevent disease build-up.

Frequently Asked Questions

Can I plant courgettes next to tomatoes?

While it's not harmful, it's better to separate them as they both require significant nutrients, which can lead to competition.

Do courgettes need full sun?

Yes, courgettes thrive in full sun. Ensure they receive at least 6-8 hours of sunlight daily for optimal growth.

What should I avoid planting near courgettes?

Avoid planting potatoes and cucumbers nearby as they can share pests and diseases, leading to potential problems.

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