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Onion Companion Planting Guide

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Categories Gardening, Recommendations, Resources, Seeds and Plants

Are you in need of a free onion companion planting guide? Today’s guide is part of our vegetable companion planting charts and guides series.

Companion planting is an age-old gardening technique that involves strategically planting two or more plants together to support each other’s growth and health. When done correctly, companion planting can create a thriving garden environment, with increased yields and reduced pests and diseases.

onions planted in dirt with the caption onion companion planting guide

Onions are one of the most common vegetables grown in gardens around the world and they make excellent companions for several different types of plants.

In this guide, we’ll cover all you need to know about onion companion planting so you can maximize your harvest this season!

This article may contain affiliate links. Please see our disclosure policy for more details.

What Is Companion Planting?

Have you ever heard of companion planting? It’s a fascinating concept that involves pairing different plants together in the same garden bed to encourage growth and ward off pests.

Companion planting is a phrase that might sound fancy, but it’s simply about putting your plants together in the right way.

onions planted in dirt with the caption onion companion planting guide

By pairing your onion with the right vegetables, fruits, or herbs, their lives can enrich eath other. Plants each have their own unique sets of skills and needs, so why not take advantage of that by creating a little ecosystem for your plants with companion planting?

For example, did you know that planting onions next to carrots can actually improve their flavor? It’s true! The sulfurous compounds released by the onions help to repel carrot flies, while the carrots themselves release compounds that benefit the onions.

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It’s a win-win situation for both plants, and just one example of how companion planting can work wonders for your garden.

Free Printable Onion Companion Planting Guide PDF

If you want to learn more about companion planting but you don’t want to drag your phone, or even worse, your laptop, out to your garden, you will definitely want to snag this free printable onion companion planting guide PDF.

Onion Companion Planting Guide

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    When you download and print this companion planting PDF, you can take all the information in this article with you! Just add your page to your homesteading or gardening binder or slip it into your pocket and you’re good to go.

    Click here to access your printable onion companion planting guide.

    Onion Companion Planting With Vegetables

    Onions are an important part of a healthy garden, and they pair well with many different types of vegetables. Here are some of the best vegetable companions for onions:

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    – Carrots – As mentioned before, carrots and onions can make excellent companions. Not only will their flavors enhance each other, but the sulfur compounds from the onions can repel pests that might otherwise attack your carrots.

    – Tomatoes – Planting onions near tomatoes can help to ward off aphids and other pests, as well as add flavor to the tomatoes themselves.

    onions planted in dirt with the caption onion companion planting guide

    More vegetables you can plant near your onions include broccoli, brussels sprouts, cabbage, cauliflower, radishes, beets, chard, collard greens, kale, lettuce, spinach, celery, hot peppers, cherry peppers, bell peppers, and potatoes.

    Onion Companion Planting With Herbs

    Herbs are a wonderful addition to any garden, and they also pair well with onions. Here are some herbs that make excellent companions for onions:

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    – Parsley – Parsley and onions can help repel certain types of flies, as well as add flavor to each other’s leaves.

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    – Dill – Planting dill near onions can help to keep away certain types of pests, and it will also add a potent flavor to your onions.

    – Oregano – Not only does oregano pair well with onions in the kitchen, but they make excellent companions in the garden too! Oregano helps to ward off certain diseases and pests, and it also adds a wonderful flavor to your onions.

    – Mint – Not only will mint help to keep away certain types of pests, but it’s also a great way to add flavor to your onions!

    onions planted in dirt with the caption onion companion planting guide

    With this guide in hand, you’ll be able to maximize your harvest this season by utilizing the amazing benefits of companion planting with onions. How cool is that? So get out there and give companion planting a try! You won’t regret it. Happy gardening!

    Can I Plant Onions Next To Tomatoes?

    Picture this: a whimsical, vibrant garden bursting with juicy red tomatoes and fragrant onions. Now, you might be wondering, can these two delicious crops coexist and even flourish together? The answer is a resounding yes!

    You see, this is what we call companion planting, where certain plants work together to create a harmonious environment that benefits them both. Onions and tomatoes, for instance, make great companions because they repel pests that would otherwise munch on their foliage.

    Additionally, the aromatic onions (not to mention the sulfuric compounds) can even enhance the flavor of the tomatoes, creating a dynamic duo that’s both tasty and functional. (The sulfur is also what helps to deter certain pests that might otherwise attack your tomatoes.)

    It’s a win-win situation for both plants, plus it’s an easy way to increase your harvest this season.

    So, next time you’re planning your garden, allow these two to cozy up and let the magic unfold!

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    What Are The BEST Onion Companion Plants?

    Here are some of the BEST onion companion plants to grow in your garden:

    onions planted in dirt with the caption onion companion planting guide
    • Broccoli
    • Brussel Sprouts
    • Cabbage
    • Cauliflower
    • Radishes
    • Calendula
    • Nasturtium
    • Chamomile
    • Dill
    • Mint
    • Oregano
    • Parsley
    • Beets
    • Chard
    • Collard Greens
    • Kale
    • Lettuce
    • Spinach
    • Celery
    • Hot Peppers
    • Hot Cherry Peppers
    • Bell Peppers
    • Tomatoes
    • Strawberries
    • Apple Trees
    • Raspberries
    • Blueberries
    • Beets
    • Carrots
    • Potatoes
    • Cantaloupe
    • Honeydew
    • Watermelon

    Just add a row or two of onions next to the fruits, vegetables, and herbs listed above and you’ll be well on your way to companion planting!

    What Vegetables Should Not Be Planted With Onions?

    The following plants should not be planted alongside onions:

    These plants should not be planted together because they can encourage diseases or pests that would attack them both. Additionally, the strong onion odor may negatively affect the taste of these vegetables and herbs.

    More Companion Gardening Tips

    Still looking for more companion gardening tips? Check out these resources!

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    Onion Companion Planting Guide

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      Charlene has been dabbling in and learning about the homesteading lifestyle for almost 20 years. She recently started a real-world homestead with her extended family and is excited to share 20+ years of knowledge and experience with the world!

      While she certainly doesn't know everything about homesteading and is learning more every day, she is excited to learn and grow along with YOU!

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