The best companion plants for eggplant are basil, marigolds, nasturtiums, borage, oregano, thyme, chives, dill, cilantro, parsley, bush beans, green beans, peas, lettuce, spinach, radishes, calendula, and sweet alyssum. Eggplant is also called aubergine in the UK and brinjal in some regions, and the same companion planting guidance applies to all three names.
Companion planting works best when it solves a real garden problem. For eggplant, the main goals are supporting beneficial insects, attracting pollinators, using space efficiently while plants are young, reducing bare soil, and avoiding pest and disease patterns that affect nightshade crops.
Companion planting is not a guarantee that pests will disappear. Eggplant still needs full sun, warm soil, consistent watering, fertile soil, support, weed control, and regular pest checks. For broader pairing help, use HerbVity’s companion plant finder and companion planting guide.
Quick Answer: Best Companion Plants for Eggplant
Use these eggplant companion plants by purpose:
- Best herbs: basil, oregano, thyme, rosemary, sage, dill, cilantro, parsley, and chives.
- Best flowers: marigolds, nasturtiums, borage, calendula, and sweet alyssum.
- Best vegetables: bush beans, green beans, peas, lettuce, spinach, and radishes.
- Use with caution: peppers and tomatoes, because they share warm-season needs but also share some pests and diseases.
- Avoid or keep separate: potatoes, fennel, black walnut, mint in the ground, lemon balm in the ground, and tall shading crops planted too close.
For most home gardens, the best layout is simple: plant eggplant in full sun, keep airflow open, add basil or flowers nearby, use short greens or radishes only while the eggplant plants are young, and rotate nightshade crops away from the same bed in future seasons.
Eggplant Companion Plants at a Glance
| Companion plant | Main benefit | Best placement | Watch out for |
|---|---|---|---|
| Basil | Aromatic herb, edible crop, and useful garden diversity | Near the eggplant row or in nearby pots | Needs regular water and sun; do not let it crowd airflow. |
| Marigolds | Flower diversity and beneficial insect support | Bed edges or between young plants with room | Do not rely on marigolds as guaranteed pest control. |
| Nasturtiums | Flowering companion and possible trap or distractor crop in some gardens | Bed edge or nearby container | Can sprawl and crowd young eggplants. |
| Borage | Pollinator support and flower diversity | At bed ends or in a nearby pollinator strip | Can grow large and self-seed. |
| Sweet alyssum | Low flowers that support beneficial insects | Bed edges, path edges, containers | Keep it from becoming a dense mat at the eggplant stem. |
| Calendula | Long-blooming flower for insect diversity | Near the bed edge or in a nearby flower strip | Remove spent plants if they shade seedlings. |
| Oregano | Flowering herb and beneficial insect support | Nearby pot or controlled bed edge | Can spread aggressively in rich soil. |
| Thyme | Low herb that flowers and fits bed edges | Sunny, well-drained bed edge | Does not like soggy soil. |
| Chives | Compact allium with pollinator-friendly flowers | Bed edge, corner pocket, or nearby pot | Divide clumps before they crowd the row. |
| Dill, cilantro, parsley | Small flowers can support beneficial insects when allowed to bloom | Nearby herb strip or bed edge | Do not place tall flowering stems where they shade eggplant. |
| Bush beans and green beans | Warm-season edible crop and useful bed diversity | Nearby row or edge with enough room | Beans do not replace balanced fertility; avoid dense shading. |
| Peas | Cool-season legume for nearby rotation or edge planting | Before eggplant goes in, or on a trellis away from shade risk | Do not let a trellis shade young eggplant. |
| Lettuce and spinach | Short-term cool-season fillers | Between young eggplants before the canopy fills | Harvest before they crowd or trap humidity. |
| Radishes | Fast filler crop and possible flea beetle trap crop strategy | Short-term gaps or bed edges | Harvest quickly; trap crops must be managed, not ignored. |
How Companion Planting Helps Eggplant
Eggplant is a warm-season crop in the nightshade family, Solanaceae. It needs full sun, warm weather, fertile soil, and consistent moisture to produce well. University of Maryland Extension lists eggplant as a very tender warm-season annual and notes that it needs at least 6 hours of direct sun, with 8 to 10 hours preferred.
Companion plants can support eggplant in four main ways:
- Beneficial insects: small flowers and herbs can support predators, parasitoids, hoverflies, and other beneficial insects.
- Pollinator support: flowering plants can increase pollinator activity in the vegetable garden.
- Space use: short greens and radishes can use early-season gaps before eggplants become large.
- Crop rotation awareness: keeping nightshades out of the same bed year after year can reduce pest and disease buildup.
The key is balance. A companion plant that shades eggplant, crowds airflow, steals water, or shares pest pressure can hurt more than it helps.
Best Flowers to Plant With Eggplant
Flowers are useful around eggplant because they can support beneficial insects and pollinators. Plant them near the row, at bed edges, or in nearby containers so they add diversity without crowding the crop.
Marigolds
Marigolds are popular eggplant companions because they are easy to grow, long-blooming, and useful for adding flower diversity in a vegetable bed. They work best along bed edges or between young eggplants with adequate spacing.
Avoid claiming that marigolds automatically repel every eggplant pest. University of Minnesota Extension specifically cautions that common claims about marigolds deterring Colorado potato beetles are not well supported. Use marigolds for diversity and beneficial insect value, not as a guaranteed pest-control solution.
Nasturtiums
Nasturtiums can be useful near eggplant because they flower, attract insects, and can act as a distractor or trap-style plant in some gardens. They are especially useful along a bed edge or in a nearby container.
Nasturtiums can sprawl. Keep them from climbing into the eggplant canopy or covering the base of the plant, especially in humid weather.
Borage
Borage is useful as a pollinator-support plant near eggplant beds. Its blue flowers are attractive to bees and other insects, and it adds diversity to a summer vegetable garden.
Plant borage at the end of a bed or in a nearby pollinator strip. It can become large and may self-seed, so it is not ideal in the middle of a small eggplant bed.
Calendula and sweet alyssum
Calendula and sweet alyssum are useful low-to-medium flower companions for eggplant. Sweet alyssum is especially useful as a low-growing insectary plant around vegetable beds because it is compact, long-blooming, and supports beneficial insects.
Use sweet alyssum along paths, bed edges, or containers. Use calendula where it will not shade young eggplant plants.
Best Herbs to Plant With Eggplant
Herbs are practical eggplant companions because they are useful crops themselves and many produce small flowers that can support beneficial insects when allowed to bloom. University of Delaware Extension notes that herbs such as basil, coriander, rosemary, lavender, parsley, borage, dill, and chives have been shown in at least some studies to attract natural enemies or repel herbivores.
Basil
Basil is one of the easiest herbs to grow near eggplant. It likes warmth, sun, and regular harvest, which makes it a good kitchen-garden partner in summer beds.
Plant basil near eggplant, but leave enough airflow around both crops. Harvest basil regularly so it does not become too tall or shade lower eggplant leaves. For more, see HerbVity’s companion plants for basil.
Oregano and thyme
Oregano and thyme can work near eggplant, especially along the bed edge. Their flowers can support beneficial insects, and their low growth can fit around the margins of a vegetable bed.
Oregano can spread, so use it in a nearby pot or controlled edge planting. Thyme needs good drainage and should not be planted where the soil stays wet. See HerbVity’s companion plants for oregano and companion plants for thyme.
Rosemary and sage
Rosemary and sage are useful nearby herbs in hot, sunny gardens, but they prefer drier, well-drained conditions than eggplant often receives. They are usually better in nearby pots or at the outer edge of a bed rather than directly in the eggplant row.
Use these herbs where they will not compete for water or crowd the eggplant roots. See companion plants for rosemary and companion plants for sage.
Dill, cilantro, parsley, and chives
Dill, cilantro, parsley, and chives are useful near eggplant because their flowers can support beneficial insects. Place them near the bed edge or in a nearby herb strip where they can bloom without shading the eggplant.
Dill can grow tall, cilantro bolts quickly in heat, parsley is biennial, and chives form clumps. Keep each one managed so it supports the planting instead of competing with it. See companion plants for dill, companion plants for cilantro, companion plants for parsley, and companion plants for chives.
Best Vegetables to Plant With Eggplant
Vegetable companions are most useful when they make smart use of space without increasing pest pressure or shading the eggplant. Eggplant becomes a large warm-season plant, so companion vegetables should either grow at the edge, mature quickly, or be placed in a nearby row.
Bush beans and green beans
Bush beans and green beans can grow near eggplant when spacing is managed well. They are warm-season crops and can be useful in a diverse vegetable bed.
Beans are legumes, but do not treat them as instant fertilizer. They can fix nitrogen biologically under the right conditions, but eggplant is a heavy-feeding crop and still needs good soil, compost, and balanced fertility. For more, see companion plants for bush beans and companion plants for green beans.
Peas
Peas are a cool-season crop, so they are often most useful before eggplant goes into the bed or on a nearby trellis that will not shade the eggplant later.
Use peas as part of a rotation or early-season planting, then clear the space before warm-season eggplant needs full sun and airflow. See companion plants for peas.
Lettuce and spinach
Lettuce and spinach can fill open spaces around young eggplant plants early in the season. They grow quickly, prefer cooler conditions, and can be harvested before eggplant reaches full size.
Do not let greens form a dense, damp mat around the base of eggplant. Harvest them early or plant them on the edge of the bed. See companion plants for lettuce and companion plants for spinach.
Radishes
Radishes are useful short-term companions because they mature quickly and can use space before eggplant grows large. Radish may also fit some pest-aware trap-crop strategies for flea beetles, but trap crops must be monitored and managed.
Harvest radishes early so they do not compete with eggplant. For broader pairings, see companion plants for radishes.
Peppers, with caution
Peppers can grow near eggplant because both are warm-season crops with similar light and temperature needs. However, they are both nightshades, so they can share some pest and disease issues.
Use peppers near eggplant only if you can rotate nightshade crops in future seasons, keep plants well spaced, and monitor pests carefully. This is a “possible with caution” pairing, not a perfect companion. See companion plants for peppers.
Trap Crops and Pest-Aware Planting Around Eggplant
Eggplant can attract flea beetles and Colorado potato beetles, so pest-aware planting matters. University of Minnesota Extension notes that flea beetles are common on many vegetable crops, including eggplant, and that eggplant seedlings are especially preferred by flea beetles. It also notes that radish can be used as a highly favored trap crop for flea beetles, but trap crops must be planted and managed intentionally.
Trap cropping is not the same as planting a random companion and walking away. A trap crop should be more attractive to the pest than the main crop, planted in the right place and timing, and monitored so pests do not simply multiply and move back into the eggplant.
- For flea beetles: row covers, weed control, crop debris cleanup, and careful monitoring are often more reliable than companion planting alone.
- For Colorado potato beetle: avoid planting eggplant next to potatoes or in the same area after potatoes; monitor leaves and egg masses.
- For beneficial insects: add small flowers such as sweet alyssum, dill, cilantro, parsley, calendula, and borage near the bed.
- For airflow: do not crowd eggplant with dense companions that make pest scouting harder.
What Not to Plant With Eggplant
The worst eggplant companions either share too many pests, compete heavily, spread aggressively, or create shade and humidity around the crop.
| Plant or group | Why to avoid or use caution | Better approach |
|---|---|---|
| Potatoes | Potatoes and eggplants are both nightshades and can share Colorado potato beetle pressure and rotation concerns. | Keep potatoes in a separate bed and rotate nightshades. |
| Tomatoes | Similar warm-season needs, but shared nightshade pests and diseases. | Plant nearby only with spacing, airflow, and rotation planning. |
| Peppers | Can work nearby, but share nightshade family risks. | Use with caution and rotate the bed next season. |
| Fennel | Often treated as a poor companion because it can inhibit or compete with nearby crops. | Grow fennel in its own separate space. |
| Mint in the ground | Spreads aggressively and can take over a vegetable bed. | Grow mint in a separate container. See companion plants for mint. |
| Lemon balm in the ground | Can spread aggressively like other mint-family plants. | Grow in a pot away from the eggplant bed. |
| Black walnut | Black walnut can affect sensitive plants through juglone and root-zone competition. | Keep vegetable beds well away from black walnut roots and leaf litter. |
| Large corn, sunflowers, or okra too close | Can shade eggplant and compete for water. | Plant tall crops to the north side or in a separate bed. |
| Dense squash or cucumber vines | Cucumbers and squash are cucurbits, not nightshades, but dense vines can crowd and reduce airflow. | Use trellises or separate beds if growing nearby. |
| Heavy brassicas in tight spacing | Broccoli, cabbage, kale, and cauliflower are heavy feeders and can compete with eggplant. | Use brassicas in rotation, not packed tightly beside eggplant. |
Companion Plants for Eggplant in Containers
Container eggplant needs more space than many gardeners expect. Eggplant is a heavy-feeding warm-season crop, and containers limit water, nutrients, root space, and airflow. In many cases, the best companion planting plan is to grow companions in nearby pots instead of inside the same container.
| Container setup | Best companions | Avoid | Spacing note |
|---|---|---|---|
| Single eggplant in a medium pot | Separate nearby pots of basil, thyme, or marigold | Extra plants in the same pot | Give the eggplant the full root space. |
| Large container or grow bag | Basil, compact marigold, sweet alyssum, lettuce at the edge | Beans, large nasturtiums, mint, tall herbs | Keep the eggplant stem and airflow open. |
| Patio container grouping | Eggplant pot surrounded by basil, chives, thyme, calendula, and alyssum pots | Dense plants that hide pests or block light | Use grouped containers instead of crowding one pot. |
| Balcony garden | Compact herbs, flowers, and greens in separate containers | Tall crops that shade eggplant | Place eggplant where it gets the most sun. |
Container companions should make care easier, not harder. If companion plants cause the pot to dry out too quickly, reduce airflow, or make pest checks harder, move them to separate containers.
Companion Planting Layout Ideas for Eggplant
Eggplant spacing matters because mature plants become wide and leafy. University of Maryland Extension recommends 18 to 24 inches in-row spacing and 30 to 36 inches between rows for eggplant. Companion plants should fit around that spacing, not erase it.
| Garden setup | Best layout | Good companions | What to avoid |
|---|---|---|---|
| Raised bed | Eggplants centered or in a row, flowers and herbs at edges | Basil, marigolds, nasturtiums, alyssum, chives | Dense companions between every eggplant. |
| In-ground vegetable row | Eggplants in full sun with companion flowers at row ends | Borage, calendula, sweet alyssum, dill, cilantro | Planting potatoes nearby. |
| Small garden | Use short, quick crops early, then harvest before eggplants fill in | Lettuce, spinach, radishes | Leaving cool-season crops too long. |
| Container patio | Eggplant in its own pot with companion pots grouped nearby | Basil, thyme, marigold, chives, alyssum | Overcrowding the eggplant container. |
| Pollinator strip nearby | Flowers beside the bed, not in the eggplant canopy | Borage, calendula, alyssum, dill, parsley | Tall plants shading eggplant. |
What to Plant Before or After Eggplant
Crop rotation matters more than many companion lists admit. Eggplant is in the Solanaceae family with tomatoes, peppers, tomatillos, and potatoes. Planting the same family in the same soil year after year can increase pest and disease problems. Iowa State Extension recommends not planting vegetables from the same botanical family in the same location for 3 to 4 years when possible.
| Garden situation | Best next crop group | Avoid | Why |
|---|---|---|---|
| After eggplant in the same bed | Beans, peas, lettuce, spinach, carrots, onions, or brassicas depending on season | Tomatoes, peppers, potatoes, tomatillos, more eggplant | These are nightshades and can share pests or diseases. |
| Before eggplant in spring | Quick cool-season crops such as lettuce, spinach, radishes, or peas | Potatoes in the same bed immediately before eggplant | Potatoes can increase Colorado potato beetle and nightshade rotation issues. |
| Small garden with limited beds | Rotate as best as possible and keep records | Planting nightshades in the same spot every year | Rotation still helps even when space is limited. |
| Container eggplant | Refresh potting mix or rotate the container crop family | Using old nightshade soil repeatedly | Container soil can carry pests, salts, and disease issues. |
Alabama Extension gives a simple rotation rule: do not plant crops from the same family in the same soil two years in a row, and notes that potatoes, eggplants, and tomatoes are all in the nightshade family.
Common Companion Planting Mistakes
- Using a huge companion list without a purpose. Every companion should solve a problem or fit a space.
- Overcrowding eggplant. Crowded plants are harder to inspect and may have worse airflow.
- Planting potatoes nearby. Potatoes and eggplants share Colorado potato beetle risk and nightshade rotation concerns.
- Believing marigolds guarantee pest control. Use flowers for diversity, not miracle claims.
- Growing mint in the bed. Mint can spread aggressively; use a separate pot.
- Letting tall crops shade eggplant. Eggplant needs full sun.
- Forgetting crop rotation. Companion plants do not cancel out repeated nightshade planting in the same soil.
- Ignoring fertility. Beans and peas can help in rotations, but eggplant still needs fertile soil and balanced nutrition.
Related HerbVity Guides
- Companion Plant Finder
- Companion Planting Guide
- Companion Plants for Basil
- Companion Plants for Dill
- Companion Plants for Cilantro
- Companion Plants for Parsley
- Companion Plants for Thyme
- Companion Plants for Oregano
- Companion Plants for Rosemary
- Companion Plants for Sage
- Companion Plants for Mint
- Companion Plants for Lettuce
- Companion Plants for Spinach
- Companion Plants for Radishes
- Companion Plants for Bush Beans
- Companion Plants for Green Beans
- Companion Plants for Peas
- Companion Plants for Peppers
- Companion Plants for Tomatoes
- Herbs
Sources and Further Reading
- University of Maryland Extension: Growing Eggplant in a Home Garden
- University of Delaware Cooperative Extension: The New Companion Planting
- West Virginia University Extension: Companion Planting
- West Virginia University Extension: Crop Rotation Guide for Vegetable Gardens
- University of Minnesota Extension: Flea Beetles
- University of Minnesota Extension: Colorado Potato Beetle
- University of Minnesota Extension: Companion Planting in Home Gardens
- Alabama Cooperative Extension: Crop Rotation
- Iowa State University Extension: Crop Rotation in the Vegetable Garden
FAQs About Companion Plants for Eggplant
What are the best companion plants for eggplant?
The best companion plants for eggplant include basil, marigolds, nasturtiums, borage, oregano, thyme, chives, dill, cilantro, parsley, bush beans, green beans, peas, lettuce, spinach, radishes, calendula, and sweet alyssum. Choose companions that support beneficial insects, spacing, or pest-aware planting without crowding the eggplant.
Is aubergine the same as eggplant?
Yes. Aubergine and eggplant are the same crop. Aubergine is the common UK name, eggplant is common in the United States, and brinjal is used in some regions. Companion planting guidance is the same for all three names.
Can basil and eggplant be planted together?
Yes. Basil and eggplant can grow together because both like warm weather and full sun. Plant basil near eggplant with enough spacing for airflow, and harvest basil regularly so it does not shade the eggplant plant.
Are marigolds good companion plants for eggplant?
Marigolds can be good eggplant companions for flower diversity and beneficial insect support, but they should not be treated as guaranteed pest control. Plant them near bed edges or between young plants with enough room for airflow.
Can beans grow with eggplant?
Yes. Bush beans and green beans can grow near eggplant if spacing is managed. Beans are legumes, but they do not replace compost or balanced fertility. Keep beans from shading eggplant or making pest checks difficult.
Can peppers and eggplant grow together?
Peppers and eggplant can grow together because they like similar warm conditions, but use caution because both are nightshades and can share some pest and disease concerns. Rotate nightshade crops away from the same bed in future seasons.
What should you not plant with eggplant?
Avoid planting eggplant close to potatoes, fennel, black walnut, mint in the ground, lemon balm in the ground, large shading crops, and dense vines. Tomatoes and peppers can be nearby with caution, but they share nightshade rotation concerns.
What companion plants work with eggplant in containers?
For container eggplant, use compact companions such as basil, thyme, marigold, sweet alyssum, lettuce, or chives in nearby pots or at the edge of a very large container. Do not crowd a medium eggplant pot with extra plants that compete for root space, water, and light.