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If you’re looking to improve your eggplant crop yield, you might want to consider companion planting. Companion planting involves growing two or more types of plants together to benefit each other. Eggplant, in particular, can benefit from companion plants that help improve soil quality, deter pests, and provide shade.
One common eggplant companion plant is crimson clover. Research has shown that planting crimson clover alongside eggplant can improve crop growth and reduce insect feeding injury. However, it’s important to note that planting eggplant directly into crimson clover did not improve most outcomes. This suggests that it’s best to plant the two crops separately and then transplant the eggplant into the clover once it has established itself.
Another factor to consider when choosing eggplant companion plants is soil regenerative practices. Studies have found that eggplant yields are greater when grown without companion plants. This suggests that it may be more beneficial to focus on improving soil quality through regenerative practices such as cover cropping and crop rotation, rather than relying solely on companion planting.

Benefits of Companion Planting for Eggplant
When it comes to growing eggplants, companion planting can offer many benefits. Here are some of the advantages of planting certain species in close proximity to eggplants:
- Nitrogen Fixation: Legumes such as beans, peas, and clover can fix nitrogen in the soil, which can benefit eggplants as they require a lot of nitrogen to grow. By planting these nitrogen-fixing plants near eggplants, you can improve soil fertility and help the eggplants grow better.
- Shade: Some plants can provide shade for eggplants, which can be beneficial in hot climates or during the summer months. For example, planting tall sunflowers or corn near eggplants can provide shade and help keep the soil moist.
- Pollinators: Bees and other pollinators are essential for eggplant production. By planting flowers such as marigolds, zinnias, and cosmos near eggplants, you can attract pollinators to your garden and improve eggplant yield.
- Beneficial Insects: Some plants can attract beneficial insects such as ladybugs, lacewings, and parasitic wasps, which can help control pests that can damage eggplants. For example, planting dill, fennel, and yarrow near eggplants can attract these beneficial insects and help keep pests under control.
- Retain Moisture: Some plants can help retain moisture in the soil, which can be beneficial for eggplants during dry periods. For example, planting herbs such as thyme, oregano, and basil near eggplants can help retain moisture in the soil and improve eggplant growth.
- Nutrients in the Soil: Some plants can help improve soil structure and add nutrients to the soil, which can benefit eggplants. For example, planting cover crops such as rye, buckwheat, and clover can help improve soil structure and add organic matter to the soil.
By planting companion plants near eggplants, you can improve soil fertility, attract pollinators and beneficial insects, retain moisture in the soil, and add nutrients to the soil. This can help improve eggplant growth and yield, making it a great choice for any gardener looking to get the most out of their eggplant crop.
Best Companion Plants for Eggplant
When it comes to companion planting for eggplant, there are a variety of options to choose from. By selecting the right companion plants, you can improve the growth and yield of your eggplants while also deterring pests and promoting overall plant health. Here are some of the best companion plants for eggplant:
Herbs and Flowers
Herbs and flowers can make excellent companion plants for eggplant. These plants can attract beneficial insects, repel pests, and improve soil health. Some of the best herbs and flowers to plant alongside eggplant include:
- Marigold: This flowering plant can help repel nematodes and other pests that can damage eggplants.
- Oregano: Oregano can help repel aphids and other insects that can harm eggplants.
- Mint: Mint can attract beneficial insects like predatory wasps, which can help control pests like tomato hornworms.
- Borage: Borage can attract pollinators like bees and also repel pests like tomato hornworms.
Vegetables
Vegetables can also make great companion plants for eggplant. By planting certain vegetables alongside eggplants, you can help improve soil health and deter pests. Some of the best vegetables to plant alongside eggplant include:
- Beans: Bush beans can help improve soil health by fixing nitrogen in the soil. They can also help deter pests like beetles and aphids.
- Tomatoes: Tomatoes and eggplants are in the same family and can benefit from being planted together. Tomatoes can help repel pests like flea beetles and also improve soil health.
- Peppers: Peppers can help repel pests like spider mites and also improve soil health.
Overall, there are many companion plants that can benefit eggplants. By selecting the right plants to grow alongside your eggplants, you can improve plant health, deter pests, and increase yield.
Companion Plants to Avoid for Eggplant
When selecting companion plants for your eggplant, it is important to consider which plants may have a negative impact on its growth and health. Some plants can compete for nutrients, attract pests, or release chemicals that inhibit the growth of eggplant. Here are some companion plants to avoid when planting eggplant:
Fennel
Fennel is a common herb that can be used in cooking and has a licorice-like flavor. However, it should not be planted near eggplant. Fennel releases chemicals that can inhibit the growth of eggplant and cause it to wilt. Additionally, fennel attracts pests such as aphids and spider mites, which can harm eggplant.
Brassicas
Brassicas, such as broccoli, Brussels sprouts and cabbage, should also be avoided as companion plants for eggplant. These plants release chemicals that can stunt the growth of eggplant and make it more susceptible to pests and diseases. Additionally, brassicas and eggplant have similar nutrient requirements, which can lead to competition for resources in the soil.
It is important to note that every garden is different, and what works for one gardener may not work for another. However, avoiding fennel and brassicas as companion plants for eggplant is generally recommended to ensure optimal growth and health.
Optimizing Eggplant Growth and Yield
When it comes to optimizing eggplant growth and yield, companion planting can be a great way to achieve better results. By carefully selecting the right plants to grow alongside your eggplants, you can improve soil quality, deter pests, and even enhance the flavor of your harvest.
One of the best companion plants for eggplants is legumes, such as pole beans. Legumes are nitrogen-fixing plants, which means they can convert atmospheric nitrogen into a form that is usable by other plants. This can help to improve soil fertility and provide your eggplants with the nutrients they need to thrive.
Another great option for companion planting with eggplants is ground cover crops, such as crimson clover. These plants can help to suppress weeds, retain moisture in the soil, and even improve soil structure. Planting eggplants directly into crimson clover has been shown to improve crop growth and yield, while also reducing insect feeding injury.
When it comes to fertilizing your eggplants, it’s important to avoid over-fertilization, which can lead to excessive vegetative growth at the expense of fruit production. Instead, use a balanced fertilizer with a ratio of 5-10-10 or 8-8-8, and apply it sparingly throughout the growing season.
Watering is also an important consideration when it comes to optimizing eggplant growth and yield. Eggplants require consistent moisture throughout the growing season, so be sure to water them regularly, especially during dry spells. However, be careful not to overwater, as this can lead to root rot and other problems.
In conclusion, by carefully selecting the right companion plants, fertilizing appropriately, and providing consistent moisture, you can optimize your eggplant growth and yield. With a little bit of planning and care, you can enjoy a bountiful harvest of delicious, flavorful eggplan
FAQ Eggplant
Some excellent companion plants for eggplants include beans, marigolds, and basil. These plants help with pest control and nutrient absorption, making for a healthier garden.
Yes, it’s best to avoid planting eggplants near fennel, as it can inhibit their growth. Potatoes can also be problematic as they are prone to similar pests and diseases.
Absolutely, herbs like basil and mint are known to deter pests that may affect eggplant growth, making them ideal companions.
When you pair eggplants with the right companions, it can result in higher yields, improved pest control, and better nutrient absorption.
While companion planting primarily affects growth and pest control, some gardeners believe that certain companion plants can subtly improve or alter the flavor of your eggplants.
