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Garlic as a Companion Plant: A Guide for Gardeners

garlic as a companion plant

Garlic is a versatile and flavorful ingredient that is used in many dishes around the world. But did you know that it can also be a helpful companion plant in your garden? By planting garlic alongside other crops, you can help protect them from pests and disease, while also improving soil health.

The Benefits of Garlic as a Companion Plant

There are several benefits to planting garlic as a companion plant in your garden. Here are some of the most important:

Pest Control

Garlic has natural insect-repelling properties that can help keep pests away from your other plants. For example, planting garlic near roses can help keep aphids at bay, while planting it near brassicas like broccoli and cabbage can help deter cabbage moths.

Disease Prevention

In addition to repelling insects, garlic also has antifungal and antibacterial properties that can help prevent the spread of disease in your garden. Planting garlic near tomatoes, for example, can help prevent fungal diseases like blight.

Soil Improvement

Garlic is a member of the allium family, which also includes onions, leeks, and shallots. Alliums are known for their ability to improve soil health by suppressing harmful bacteria and fungi while promoting beneficial microorganisms. This can lead to healthier plants and better yields.

Choosing the Right Companion Plants

When choosing companion plants for garlic, it's important to consider which plants will benefit most from its pest-repelling and disease-fighting properties. Here are some good options:


Tomatoes are a great choice for companion planting with garlic. As mentioned earlier, garlic can help prevent fungal diseases like blight in tomatoes. In addition, tomatoes and garlic have complementary root systems that won't compete for nutrients.


Brassicas like broccoli, cabbage, and kale are also good candidates for companion planting with garlic. Garlic can help deter cabbage moths, which can damage these crops.


If you have roses in your garden, planting garlic nearby can help keep aphids at bay. Aphids are a common pest that can damage roses by feeding on their leaves and buds.

How to Plant Garlic as a Companion Plant

To plant garlic as a companion plant, by selecting a location that gets plenty of sunlight and has well-draining soil. Then, follow these steps:

Step 1: Choose the Right Garlic

Choose a variety of garlic that is suited to your climate and soil conditions. Softneck varieties are better suited to warmer climates, while hardneck varieties are better suited to cooler climates.

Step 2: Prepare the Soil

Prepare the soil by adding compost or other organic matter. Mix in some bone meal or other phosphorus-rich fertilizer to promote root growth.

Step 3: Plant the Garlic

Plant the garlic cloves about 6 inches apart and 2 inches deep. Water thoroughly after planting.

Step 4: Maintain the Garden

Keep the garden well-watered and weeded, and watch for signs of pests or disease. Remove any damaged or diseased plants promptly to prevent the spread of infection.


Q: Can garlic be planted with all types of vegetables?

A: No, garlic is best planted with vegetables that are susceptible to pest and disease problems. Some good options include tomatoes, brassicas, and roses.

Q: When should garlic be planted as a companion plant?

A: Garlic is typically planted in the fall for a spring harvest. However, it can also be planted in the spring for a late summer or fall harvest.

Q: How often should garlic be watered?

A: Garlic should be watered regularly, especially during dry spells. However, be careful not to overwater, as this can lead to rot.

Q: Can garlic be grown in containers?

A: Yes, garlic can be grown in containers as long as they are at least 8 inches deep and have good drainage.

Q: Is it safe to eat garlic that has been grown near other plants?

A: Yes, it is safe to eat garlic that has been grown near other plants. In fact, the beneficial properties of garlic can actually help improve the health of other plants in your garden.

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