Learn which plants thrive in your Hardiness Zone with our new interactive map!

Companion Planting With Eggplants

By Daniel Smith ; Updated September 21, 2017
Eggplants are not toxic.
Eggplant lasagna image by Graphix from Fotolia.com

Eggplants (Aubergine) belong to the Nightshade family, which contain many toxic plant varieties. Even to this day, many cultures fear eggplant as being poisonous and will not eat it, according to the National Garden Bureau. Eggplants are primarily water and grow between 2 to 4 feet with small, star flowers. Seedlings begin yielding crops between 45 and 90 days, depending on the variety. The three primary eggplant pests are aphids, mites and beetles, advises the National Garden Bureau.

Time Frame

Transplant or sow eggplant companion plants at the same time seedlings transfer to outdoors. As the eggplants mature, they receive benefits from the companion plants. It is possible to provide companions after the eggplants are established, but preferable to place early.


The primary significance of companion plants is to reduce the amount of chemicals needed to produce eggplants in the home garden. Companion plants serve as natural soil builders and pesticides. For example, several varieties of bush beans add extra nitrogen to the soil for stronger eggplant growth. Planting these, in nearby rows or even between eggplants, raises soil nitrogen levels. Steeped catnip sprinkled over eggplants discourages visits by beetles.


The size of the gardening area determines how many eggplant companions are needed. It is best to make available several different companion plants for each row of eggplants. This will give all the plants the best advantages for growing and maturing. For example, place one coriander at the end of each row to encourage bees to visit the yard for pollination. Use marigolds between eggplants to encourage bees and discourage nematodes while using alternating rows of beans for large gardens for nitrogen.


The result of using companion plants for eggplants in the garden is less effort, and larger crops produced. The eggplants are stronger to yield healthier vegetables without loss due to predatory insect attacks. Hand-pollinating vegetables is time-consuming and not always successful. Companions encourage bees to visit flowers to yield more vegetables.


Consider using companion plants for eggplants that provide additional benefits to the gardener. For example, growing beans is another source of delicious vegetables while benefiting the soil. Marigolds provide additional color and are a striking contrast to the vegetables growing in the garden.


About the Author


Daniel Smith graduated from technical school in 1993 and has been writing since 2005. His has written numerous articles for the instructional website called eHow in areas including gardening, home improvement, celebrating special events and health-related topics.