Brussels sprouts are a nutritious and easy-to-grow fall vegetable garden staple that belongs to the Brassica oleracea (cabbage) family. Like other members of this family, Brussels sprouts can benefit from companion planting.
Companion planting is the practice of growing different plants together for mutual benefits such as pest control, improved soil fertility, and increased yield.
Understanding Companion Planting Companion planting involves growing different plants together to create a mutually beneficial environment. It is based on the principle that certain plants can improve the growth and health of others.
Companion planting can help to improve soil fertility, attract beneficial insects, repel pests, and increase yield.
Good Companion Plants for Brussels Sprouts Some good companion plants for Brussels sprouts include sage, chamomile, garlic, marigold, dill, onions, basil, celery, mint, peas, carrots, rosemary, and beans.
These plants can help to repel pests, attract beneficial insects, and improve soil fertility. For example, garlic and onions can help to repel many of the insects that harm Brussels sprouts, like cabbage worms, cabbage maggots, and loopers.
Key Takeaways
- Companion planting involves growing different plants together to create a mutually beneficial environment.
- Some good companion plants for Brussels sprouts include sage, chamomile, garlic, marigold, dill, onions, basil, celery, mint, peas, carrots, rosemary, and beans.
- Companion planting can help to improve soil fertility, attract beneficial insects, repel pests, and increase yield.
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Understanding Companion Planting
Companion planting is the practice of planting different crops together to achieve a mutually beneficial relationship.
This technique has been used for centuries by farmers and gardeners to improve crop yield, pest control, soil health, and water conservation.
Companion planting can also help to attract beneficial insects, repel harmful pests, and enhance the flavor of the crops.
The concept of companion planting is based on the idea that some plants have natural affinities for each other, while others have natural aversions.
For example, some plants produce chemicals that can repel pests or attract beneficial insects, while others produce chemicals that can inhibit the growth of neighboring plants.
When it comes to Brussels sprouts, companion planting can be particularly beneficial. Brussels sprouts are members of the Brassica oleracea family, which also includes kale, cauliflower, kohlrabi, and broccoli.
These plants are all susceptible to similar pests and diseases, making them ideal candidates for companion planting.
Some of the best companion plants for Brussels sprouts include:
- Sage
- Chamomile
- Garlic
- Marigold
- Dill
- Onions
- Basil
- Celery
- Mint
- Peas
- Carrots
- Rosemary
- Beans
These plants can help to repel pests, attract beneficial insects, and improve soil health. For example, marigolds produce a chemical that can repel nematodes, while peas can fix nitrogen in the soil, which can benefit the growth of Brussels sprouts.
On the other hand, there are also some plants that should be avoided when planting Brussels sprouts. These include:
- Other members of the Brassica family, such as cabbage and broccoli
- Nightshades, such as tomatoes and peppers
- Pole beans
- Strawberries
These plants can compete for nutrients and space, or attract pests that can harm Brussels sprouts.
Benefits of Companion Planting for Brussels Sprouts
Companion planting is a gardening technique that involves planting different crops together to maximize their growth and yield. Brussels sprouts are no exception, and they can benefit greatly from companion planting.
Here are some of the benefits of companion planting for Brussels sprouts:
1. Pest Control
One of the most significant benefits of companion planting for Brussels sprouts is pest control. Certain companion plants can help repel pests that are harmful to Brussels sprouts, such as aphids, cutworms, and cabbage loopers.
Some of these companion plants include:
- Sage
- Chamomile
- Garlic
- Marigold
- Dill
- Onions
- Basil
- Celery
- Mint
- Peas
- Carrots
- Rosemary
These plants can also attract beneficial insects, such as ladybugs and parasitic wasps, which can help control pest populations naturally.
2. Nutrient Uptake
Companion planting can also improve the nutrient uptake of Brussels sprouts. Some companion plants, such as legumes like beans and peas, have nitrogen-fixing bacteria in their roots.
These bacteria can help fix nitrogen in the soil, making it more available to other plants like Brussels sprouts.
3. Soil Health
Growing different crops together can also improve soil health. Companion plants can help break up compacted soil, improve soil structure, and increase soil fertility.
For example, planting clover as a cover crop can help fix nitrogen in the soil and improve soil structure.
4. Space Optimization
Finally, companion planting can help optimize space in the garden. By planting different crops together, you can make the most of the available space and increase your overall yield.
For example, planting Brussels sprouts with tall companion plants like corn or sunflowers can provide shade and support for the Brussels sprouts while also maximizing space in the garden.
Good Companion Plants for Brussels Sprouts
When it comes to growing Brussels sprouts, choosing the right companion plants can be a great way to improve their growth and health.
Companion plants can help deter harmful pests, attract beneficial insects, and improve soil health. Here are some good companion plants for Brussels sprouts:
Tomatoes and Garlic
Tomatoes and garlic are great companion plants for Brussels sprouts because they can help repel pests and diseases. Tomatoes contain solanine, which can help deter aphids and other pests.
Garlic, on the other hand, contains allicin, which can help deter nematodes and other soil-borne pests. Planting these two plants near Brussels sprouts can help improve their growth and health.
Aromatic Herbs
Aromatic herbs like rosemary, dill, and sage are also good companion plants for Brussels sprouts. These herbs can help repel pests like cabbage moths and flea beetles.
They can also attract beneficial insects like ladybugs and parasitic wasps, which can help control harmful pests.
Planting these herbs near Brussels sprouts can also help improve soil health and nutrient uptake.
Beans and Peas
Beans and peas are nitrogen-fixing plants, which means they can help improve soil health and nutrient uptake for Brussels sprouts. Planting beans and peas near Brussels sprouts can help improve their growth and yield. They can also help attract beneficial insects like bees and butterflies, which can help pollinate the Brussels sprouts.
Root Vegetables
Root vegetables like carrots, radishes, and onions are also good companion plants for Brussels sprouts. These plants can help improve soil health and nutrient uptake.
They can also help repel pests like aphids and cabbage worms. Planting these vegetables near Brussels sprouts can help improve their growth and yield.
Plants to Avoid Near Brussels Sprouts
While companion planting can provide numerous benefits for Brussels sprouts, planting certain plants near them can have negative effects. Here are some plants to avoid planting near Brussels sprouts:
Brassicas
Brussels sprouts are part of the brassica family, which includes cabbage, broccoli, kale, cauliflower, and kohlrabi.
Planting these plants near each other can lead to the spread of diseases and pests that affect all plants in the brassica family. It is best to rotate these plants with other crops to prevent the buildup of pests and diseases.
Nightshades
Nightshade plants, such as tomatoes and peppers, should be avoided near Brussels sprouts. These plants attract the same pests, including aphids, flea beetles, and cabbage worms, that can damage Brussels sprouts.
Additionally, nightshade plants can stunt the growth of Brussels sprouts.
Pole Beans
While bush beans can be good companion plants for Brussels sprouts, pole beans should be avoided.
Pole beans have extensive roots and vigorous foliage that can outcompete Brussels sprouts for light and nutrients, leading to stunted growth and lower yields.
Strawberries
Strawberries should be avoided near Brussels sprouts because they attract slugs, which can damage the leaves of the Brussels sprouts. Additionally, strawberries are susceptible to verticillium wilt, which can spread to the Brussels sprouts.
Other Plants
Other plants to avoid planting near Brussels sprouts include fennel, rue, and plants in the mint family. These plants can attract pests that can damage the Brussels sprouts or stunt their growth.
Pest Control Using Companion Plants
Companion planting is an effective way to control pests in a natural and organic way. By planting certain plants together, gardeners can create a diverse ecosystem that attracts beneficial insects and repels harmful ones.
Here are some of the best companion plants for brussels sprouts to control pests:
Nasturtiums
Nasturtiums are one of the best companion plants for brussels sprouts, as they repel aphids, cabbage loopers, flea beetles, and whiteflies.
These plants have a pungent odor that is unappealing to many pests, making them an excellent natural pest deterrent. Additionally, nasturtiums attract beneficial insects like ladybugs and parasitic wasps, which prey on harmful pests.
Marigolds
Marigolds are another great companion plant for brussels sprouts, as they repel nematodes, spider mites, and cabbage worms.
These plants have a strong scent that is unappealing to pests, making them an effective natural pest control method.
Additionally, marigolds attract beneficial insects like ladybugs and lacewings, which prey on harmful pests.
Garlic
Garlic is a natural pest repellent that can be planted alongside brussels sprouts to repel aphids, Japanese beetles, and cabbage worms.
Garlic has a strong odor that is unappealing to many pests, making it an effective natural pest control method.
Additionally, garlic attracts beneficial insects like ladybugs and parasitic wasps, which prey on harmful pests.
Chamomile
Chamomile is a natural pest deterrent that can be planted alongside brussels sprouts to repel pests like aphids, cabbage loopers, and whiteflies.
Chamomile has a pleasant scent that is unappealing to many pests, making it an effective natural pest control method.
Additionally, chamomile attracts beneficial insects like hoverflies and parasitic wasps, which prey on harmful pests.
Other Companion Plants
Other companion plants that can be planted alongside brussels sprouts to control pests include onions, dill, basil, peas, and rosemary. These plants have natural pest-repelling properties and can attract beneficial insects that prey on harmful pests.
Improving Soil and Water Conditions
Companion planting is an excellent way to improve soil and water conditions for brussel sprouts. By planting certain plants together, gardeners can enhance growth, deter pests, and improve soil quality.
Soil Quality
Brussel sprouts prefer well-drained soil with a pH between 6.0 and 7.5. To improve soil quality, gardeners can plant nitrogen-fixing companion plants such as peas or beans. These plants help to add nitrogen to the soil, which is essential for healthy plant growth.
Additionally, gardeners can plant cover crops such as clover or buckwheat to improve soil health. Cover crops help to prevent soil erosion, suppress weeds, and add organic matter to the soil.
Water and Drainage
Brussel sprouts require consistent moisture to grow properly. However, overwatering can lead to root rot and other issues.
To ensure proper water and drainage, gardeners can plant companion plants such as chamomile or marigold. These plants help to improve soil structure and drainage, which can prevent waterlogging and root rot.
Additionally, gardeners can add organic matter such as compost or mulch to the soil to help retain moisture and improve soil structure. Mulching around the base of brussel sprout plants can also help to regulate soil temperature and prevent moisture loss.
Maximizing Yield and Flavor
Companion planting is one of the suitable ways to help Brussels sprouts thrive and maximize their yield and flavor.
When choosing companion plants for Brussels sprouts, it is essential to consider their nutrient needs, pest control, and growth habits to ensure they complement each other.
One of the critical nutrients that Brussels sprouts need is nitrogen. Nitrogen is essential for plant growth and development, and it helps to produce a higher yield.
Some plants that are high in nitrogen and make good companion plants for Brussels sprouts include peas, beans, and clover.
Magnesium is another important nutrient that Brussels sprouts require. Magnesium helps the plant to produce chlorophyll, which is essential for photosynthesis.
Plants that are high in magnesium, such as chamomile and dill, make good companion plants for Brussels sprouts.
When it comes to pest control, companion planting can help to deter pests and reduce the need for chemical pesticides.
Some plants that are effective in repelling destructive bugs that attack Brussels sprouts include onions, garlic, and marigold.
In addition to nutrient needs and pest control, it is also important to consider the growth habits of companion plants.
Plants that grow well with Brussels sprouts should have similar growth requirements and not compete for resources. For example, plants like celery and carrots have shallow roots and can grow well with Brussels sprouts without competing for nutrients.
Common Diseases and How to Prevent Them
Brussels sprouts are susceptible to a number of diseases, including clubroot and black rot. These diseases can cause stunted growth, yellowing leaves, and wilting. To prevent these diseases, it is important to maintain good garden hygiene and follow proper planting practices.
Clubroot
Clubroot is a soil-borne disease that can be devastating to brassica crops like Brussels sprouts. It is caused by a fungus that infects the roots, causing them to become swollen and distorted. Infected plants may wilt and die prematurely.
To prevent clubroot, it is important to practice crop rotation and avoid planting brassicas in the same location for more than two years in a row. Additionally, gardeners can amend the soil with lime to raise the pH to 7.2-7.4, which can help to reduce the severity of the disease.
Black Rot
Black rot is another common disease that affects Brussels sprouts. It is caused by a bacterium that infects the leaves, causing them to turn yellow and wilt. Infected plants may also develop blackened veins on the leaves and stems.
To prevent black rot, it is important to maintain good garden hygiene and remove any infected plant material immediately. Additionally, gardeners can plant disease-resistant varieties of Brussels sprouts and avoid planting them in areas where brassicas have been grown in the past.
Conclusion
Companion planting is an age-old practice that can offer several benefits when it comes to cultivating Brussels sprouts.
By planting compatible plants together, gardeners can enhance growth, deter pests, and improve soil quality.
Some of the best companion plants for Brussels sprouts include sage, chamomile, garlic, marigold, dill, onions, basil, celery, mint, peas, carrots, rosemary, and beans.
These plants can help to ward off pests like leafminers, squash bugs, beet armyworms, and cutworms. Additionally, they can attract beneficial insects like ladybugs and parasitic wasps.
On the other hand, there are some plants that should not be grown with Brussels sprouts. These include plants from the nightshade family like tomatoes, peppers, and eggplants. These plants can attract pests like aphids and attract diseases that can harm the Brussels sprouts.
Frequently Asked Questions
What are some vegetables that make good companion plants for brussel sprouts?
Vegetables that make good companion plants for brussel sprouts include peas, beans, carrots, and celery. These plants help to attract beneficial insects that can help control pests that may harm the brussel sprouts.
What are some herbs that make good companion plants for brussel sprouts?
Herbs that make good companion plants for brussel sprouts include sage, rosemary, and thyme. These herbs help to repel pests and attract beneficial insects that can help control pests.
Can brussel sprouts be planted with other members of the brassica family?
It is not recommended to plant brussel sprouts with other members of the brassica family, such as broccoli or cauliflower. This is because they are susceptible to the same pests and diseases, which can spread quickly and damage the entire crop.
Are there any plants that should not be planted near brussel sprouts?
Plants that should not be planted near brussel sprouts include strawberries, tomatoes, and peppers. These plants are susceptible to the same pests and diseases as brussel sprouts and can attract pests that may harm the crop.
What are some benefits of companion planting with brussel sprouts?
Companion planting with brussel sprouts can help to improve the health and yield of the crop. Companion plants can help to repel pests, attract beneficial insects, and improve soil health by fixing nitrogen and adding organic matter.
Can flowers be planted with brussel sprouts for companion planting?
Yes, flowers can be planted with brussel sprouts for companion planting. Marigolds and nasturtiums are good choices, as they can help to repel pests and attract beneficial insects.
Hey, I’m Lisa and I’ve been an avid gardener for over 30 years. I love writing, talking and living in the garden! Feel free to connect with me on my socials below