10 Best Cauliflower Companion Plants For A Thriving Garden

The humble cauliflower is often overlooked in the garden, but it’s an incredibly versatile vegetable that can be used in a variety of dishes. Its planting pairs well with a variety of spices, herbs, and other vegetables, and its crisp texture adds crunch to salads and stir-fries. But to ensure a thriving cauliflower crop, it’s important to choose the right companion plants. A companion for cauliflower helps keep pests away, improves soil fertility, and encourages beneficial organisms in the vegetable garden.

In this article, we’ll explore the best cauliflower companion plants for a productive garden.

You’ll learn what plants to pair along with cauliflower for maximum flavor and growth, as well as tips for keeping your cauliflower happy and healthy. So let’s get started!

What Is Companion Planting?

Companion planting is the practice of planting different types of plants together in order to enhance their growth and yield. This type of gardening has been practiced for centuries, as it helps to create a more balanced and beneficial environment for low growing plants. Companion planting also has beneficial relationships to attract insects, improve soil fertility, increase yields, reduce pests, and conserve water. 

One of the most common forms of companion planting is intercropping, which is the practice of growing different crops in the same area. This can help to maximize the use of space and resources, as well as provide some pest and disease control. Planting different varieties of plants together can also help to increase biodiversity, as well as provide a more attractive garden.

cauliflower companion plants
Companion Planting

Intercropping often involves planting two or more different plants together in the same row or bed. This can be beneficial for many reasons, including enhanced pest and disease control, improved pollination, and reduced competition for resources. For example, some vegetables, such as tomatoes and peppers, have been known to benefit when planted together, as they can help to attract beneficial insects and provide some protection against pests.

The Best Month To Plant Cauliflower

Cauliflower is a cool season vegetable that is best planted in the spring or fall months. The best month to plant cauliflower depends on your climate and the variety of cauliflower you are growing.

In most parts of the United States, the optimal time to plant cauliflower is in the spring months of March, April, and May. This is when the soil is still cool and moist and the temperatures are mild. Planting in the spring will give your cauliflower a chance to establish itself before the warmer, drier summer months.

In warm climates, you can plant cauliflower in the fall months of September, October, and November. Fall planting gives the cauliflower a chance to mature before the cold winter months. Cauliflower is a cool season crop and will not tolerate extreme heat or cold.

Benefits Of Companion Planting

Companion planting is a natural method of pest control, as certain plants attract beneficial insects and ward off pests. It can also help to promote better soil fertility, reduce weed growth, and improve crop yields. Here are a few of the benefits of companion planting:

1. Increased Yields

Companion planting increases yields by providing the plants with more nutrients, sunlight, and water than they would otherwise receive if they were planted alone. This is especially true when different species are planted together, as the plants can share resources and help each other to thrive.

cauliflower companion plants
Benefits Of Companion Planting

2. Reduced Pests and Diseases

Companion planting can help to reduce the presence of pests and diseases, as certain plants repel or attract certain bugs or fungi. For example, garlic and chives are known to repel aphids, while marigolds are known to repel root-knot nematodes.

3. Improved Soil Quality

This planting option encourages diverse and healthy root systems, which in turn leads to improved soil quality. This improved soil quality will result in better drainage, better aeration, and more nutrients available in the soil for plants to absorb.  Beans and other plants in the legume family, for instance, take nitrogen from the air and transfer it to the soil surrounding them.

4. Attract Beneficial Insects

It can attract beneficial insects such as bees, which can help spread pollen. For instance, companion planting with flowers like clover, daisies, and asters can attract pollinating bees to the garden. Bees will help to spread the pollen from the flowers, which can help to increase the yield of fruit and vegetables.

5. Supporting Others

It can be used as physical supports for other plants. For example, tall, fast-growing plants like corn or sunflowers can be planted alongside shorter plants like beans or squash to provide a physical support for them to climb on. Additionally, staking or trellising can be used to provide climbing plants with additional support, or to support taller plants like tomatoes or peppers to keep them from falling over.

The Best Cauliflower Companion Plants

Did you know that you can improve the health and quality of your cauliflower crop by choosing the right companion plants? Knowing which plants are the best companions for cauliflower can help you keep your plants healthy and produce the best possible harvest.

In this article, the best companion plants for cauliflower and growing tips to get the most out of your garden.

1. Culinary Sage (Salvia Officinalis)

Salvia officinalis, often known as broadleaf, common, or culinary sage, is a perennial herb that you may recognize from Thanksgiving. Sage prefers dry to medium moisture conditions, therefore it will never fight with cauliflower for water. Its earthy scent repels pests while luring beneficial pollinators, such as the tiny parasitoid wasp and hoverfly that feed on caterpillars and aphids, to its pale blue flowers.

cauliflower companion plants
Culinary Sage (Salvia Officinalis)

To plant culinary sage, you should use a potting mix specifically designed for herbs. Fill the container with the soil and place the sage plant into the container. Gently pat down the soil around the plant and then water it. Water the plant every few days, but make sure the soil is not overly wet or soggy. You can also mist the plant’s leaves to increase humidity.

2. Dill (Anethum Graveolens)

If you want the Anethum graveolens or dill as one of the best cauliflower companions, you can’t only use it for its frothy piles of finely cut, fragrant leaves. So, you must allow at least a couple of the plants to bloom, in order to draw helpful insects to their umbels, or flattened flower heads filled with small yellow blooms.

Additionally to hoverflies, ladybugs, and lacewings that consume aphids, parasitoid wasps that lay their eggs in and kill brassica caterpillars and aphids, they also draw a variety of pollinating bees and butterflies.

cauliflower companion plants
Dill (Anethum Graveolens)

To plant the dill as a cauliflower companion, plant your dill seeds or seedlings at least 18-24 inches apart. You should choose a location that gets plenty of sunlight and has well-draining soil. Remember to water your dill plants regularly, making sure to keep the soil moist but not soggy.

3. Fennel (Foeniculum Vulgare)

Short-lived perennial Foeniculum vulgare, often known as Florence fennel, has an anise- or licorice-like flavor and is great both raw and cooked. Fennel and cauliflower are a great combination because fennel helps repel insects that can harm cauliflower. It also helps attract beneficial insects that can help keep pests away. Fennel also helps improve the soil quality, providing nitrogen to neighboring plants.

cauliflower companion plants
Fennel (Foeniculum Vulgare)

We recommend plant fennel near cauliflower in early spring or direct-sow in late summer. Space the plants about 18 inches apart. Water fennel deeply once a week, providing the soil with 1 inch of water each time. Water more often in extreme heat. There are no concerns about competition because fennel develops far deeper roots than cauliflower and has modest water requirements.

4. Garlic (Allium Sativum)

Allium sativum and A. sativum var. ophioscorodon or garlic has a pungent aroma that is unappealing to pests. Therefore, garlic and cauliflower get along together in your garden. Garlic repels most pests, including aphids, which can damage cauliflower plants. It also provides protection from certain diseases, such as black rot, which can affect cauliflower.

cauliflower companion plants
Garlic (Allium Sativum)

Moreover, plant garlic cloves 4-6 inches apart in well-drained soil in the early spring. The cloves should be planted with the pointed end up and the flat end down. Water the garlic regularly to keep the soil moist, but not soaking wet. This is especially important during the summer months when the plant is actively growing.

5. Onion (Allium Cepa)

Another pungent plant that keeps pests away is the bulb onion, Allium cepa. Many people report that cauliflower always tastes better when grown near onions. Planting onion as a companion to cauliflower is beneficial because it helps to repel pests such as aphids and whiteflies, which are attracted to cauliflower. Onions also provide a natural fungicide to help protect the cauliflower from diseases.

Onion (Allium Cepa)
Onion (Allium Cepa)

Onions require little to moderate amounts of water and ward off a variety of insects, including aphids and caterpillars that only eat brassica plants. Moreover,  plant your onion seeds 1/4 inch deep in rows 1 foot apart. Water your onion plants regularly, providing 1 inch of water per week. Water the plants at the base to avoid wetting the leaves, which can cause disease.

6. Oregano (Origanum Vulgare)

Origanum vulgare or an annual oregano, is perhaps best known for its flavorful tiny green leaves, which give your pizza it’s zing. Oregano is a good companion plant for cauliflower because it helps repel pests like aphids and cabbage moths, and it also helps improve the flavor of the cauliflower. All worries about moisture competition for this garden friend are gone thanks to its moderate water requirements and capacity to endure drought.

Oregano (Origanum Vulgare)
Oregano (Origanum Vulgare)

For the best results, plant the oregano near the cauliflower, spacing them about 16-24 inches apart. Water the oregano thoroughly each week, ensuring the soil is moist but not soggy.

7. Peppermint (Mentha × Piperita)

Mentha x piperita, a perennial peppermint, is often regarded as invasive and weedy, but if you enjoy a fistful in your pitcher of home-brewed iced tea, you might embrace it. If you let it, mint will quickly encroach on your garden space because of how quickly it spreads. Moreover, the aromatic essential oils in the peppermint are an effective deterrent for many insect pests and can help to naturally keep the cauliflower safe.

mentha × piperita
Peppermint (Mentha × Piperita)

Plant the peppermint about one foot away from the cauliflower to provide enough room for both plants to grow together. Water peppermint regularly, but avoid overwatering. Water the peppermint when the soil feels dry to the touch, providing enough water to keep the soil moist but not soggy. You can also mulch around the peppermint to help retain moisture in the soil and prevent weeds from invading.

8. Potato (Solanum Tuberosum)

Cauliflower and potatoes (Solanum tuberosum) are known to benefit each other when planted together. The cauliflower’s shallow root system helps to aerate the soil and makes it easier for the potatoes’ deep root system to access nutrients. The potatoes also act as a natural mulch, helping to keep the soil moist around the cauliflower plants.

Solanum tuberosum
Potato (Solanum Tuberosum)

To get a thriving garden, plant the potatoes approximately 3-4 inches deep and 12 inches apart in a sunny location with well-drained soil. Remember to water the potatoes deeply and regularly to keep the soil moist.

9. Thyme (Thymus Vulgaris)

Thymus vulgaris, sometimes known as culinary or common thyme, is an annual plant that repels flea beetles, cabbage butterflies and moths, as well as brassica larvae, with a pungent, earthy perfume. Thyme is a non-competitive friend due to its minimal water requirements and drought tolerance.

Moreover, thyme will also help to improve the soil by adding essential nutrients, and its strong scent can help to mask the smell of the cauliflower and deter some pests. These companion plant combinations are great for your garden.

Thymus vulgaris
Thyme (Thymus Vulgaris)

To plant thyme as a companion plant for cauliflower, start by loosening the soil in your garden and adding some compost to it. Then, sow the thyme seeds about 1/4 inch deep and 4 to 6 inches apart. Water the soil lightly and keep it moist, but not soggy.

Once the thyme is established and the seedlings have grown to about 3 to 4 inches tall, thin them out to 1 foot apart. Water the thyme regularly, allowing the soil to dry out slightly between waterings.

10. Hyssop (Hyssopus)

Hyssopus or hyssop is a great companion plant for cauliflower because it acts as a repellent for aphids and other insects that can be damaging to cauliflower. Moreover, Brassica pests may not even notice your crop is there if you sow a perimeter of seeds around it while they are busy munching the hyssop.

Additionally, there won’t be any water rivalry because both have low to medium moisture requirements.

Hyssop (Hyssopus)

To plant and water hyssop, you should start by preparing the soil. Add in compost and fertilizer, and then till the soil to a depth of 12 inches. Plant the hyssop seeds at a depth of 1/4 inch and water them thoroughly. Once the plants have emerged, water them once or twice a week, depending on the weather.

Final Thought

Cauliflower is a great vegetable to plant in the garden, and companion planting can help to ensure that the crop grows well and is healthy. Planting companion plants that attract beneficial insects and repel pests can help to keep the cauliflower crop free from damage and disease, while also providing additional nutrition and helping to promote healthy growth.

With careful selection of companion plants, the cauliflower crop can be grown in a way that is beneficial to the environment and to the health of the gardener.

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Frequently Asked Questions (FAQ)

How much spacing does a cauliflower plant need?

Cauliflower plants need at least 12-18 inches (30-45 cm) of spacing between plants. This spacing is necessary to ensure that the plants have enough room to grow and to ensure that the soil remains moist and cool. It also helps to reduce the spread of diseases and pests.

What should not be planted with cauliflower?

Plants that produce strong aromas, such as garlic, onions, or herbs, should not be planted with cauliflower. It’s because their strong smells may interfere with the flavor of the cauliflower. If you are looking for the best cauliflower companion plants, please read the article above.

Can cauliflower be planted with zucchini?

No, you can’t plant cauliflower zucchini. Kale, kohlrabi, broccoli, Brussels sprouts, and cauliflower are members of the brassica family and shouldn’t be planted anywhere near your zucchini plants. They are both susceptible to the same pests and diseases, and one can easily spread to the other.

In addition, they both require similar soil, nutrients, and growing conditions, which can lead to competition for resources.

Can you grow cauliflower in a raised bed?

Yes, you can grow cauliflower in a raised bed. This is because raised beds provide better drainage, increased soil fertility, and improved access to sunlight, all of which are necessary for successful cauliflower growth.

Although garden-fresh cauliflower is a delectable treat, it is somewhat of a luxury crop for a small raised bed. If you need a companion planting guide, you can read the article above.

Does cauliflower regrow after cutting?

No, cauliflower does not regrow after cutting. This is because the cauliflower is a biennial plant, meaning it takes two growing seasons to produce a crop. Once the plant has been cut, it is unable to start a new growing season and will not re-sprout. If you can’t get enough cauliflower, plant several distinct types that mature at various times to extend your yield.

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