Yes, you can grow eggplant year-round if you live in a frost-free climate or have the right indoor setup. Most growers in cold areas treat eggplants as annuals, but container growing opens up new options.
I have kept the same eggplant plant going for three years now using a mix of indoor and outdoor growing. When fall comes to my zone 6 garden, I wheel my container inside before the first frost hits. The plant keeps making fruit all winter long under grow lights.
Eggplants grow as perennials in their native tropical home. They keep living and making fruit for several years when temps stay warm enough. Frost kills the stems and roots, which is why most people plant new ones each spring.
Zones 9-11 offer the right climate for year-round eggplant production outdoors without any special care. These warm areas rarely see frost so plants can stay in the ground or in pots outside all winter. Southern Florida, coastal California, and parts of Texas work well for this method.
Growers in colder zones need to bring plants inside when temps drop below 50°F (10°C) at night. Even cool temps that stay above freezing will slow growth and stop fruit set. Your plant needs steady warmth to keep producing through the winter months.
Indoor growing works best with a good setup of lights and temp control. Keep your plants at 65-75°F (18-24°C) day and night for best results. This range matches what eggplants like in their natural tropical home.
Grow lights make overwintering eggplant work even in the darkest winters. Your plants need 12-14 hours of bright light each day to keep making flowers and fruit. LED grow lights work great and use less power than older types.
Place your lights about 6-12 inches above the top leaves of your plants. Move them up as the plant grows to keep the right distance. Too close and you burn the leaves, too far and the plant gets leggy.
Last winter I got over twenty eggplants from one plant sitting in my spare room under a shop light. The fruit grew smaller than summer harvests but the taste was just as good. Fresh eggplant in January made all the extra effort worth it.
Humidity drops low inside heated homes which can stress your indoor plants out. Mist the leaves each morning or set pots on trays filled with wet pebbles. This extra moisture keeps leaves healthy and helps flowers set fruit.
Pests can still find your plants indoors so keep a close watch. Spider mites and aphids love the dry air inside homes during winter. Check leaf undersides each week and treat any problems right away before they spread.
Water less often in winter since your plant grows slower and uses less moisture. Let the top inch of soil dry out between drinks to avoid root rot. Overwatering kills more indoor plants than any pest or disease does.
Cut back on fertilizer during the short days of winter too. Your plant cannot use as many nutrients when light levels drop. A half-strength dose every three weeks works better than full strength every two weeks.
Pruning helps keep your indoor eggplant in good shape through the cold months. Remove any yellowing leaves and trim back leggy growth. This keeps the plant tidy and sends energy to fruit production instead of excess leaves.
Year-round eggplant takes more work than the usual summer approach. But fresh homegrown eggplant in the dead of winter makes the effort pay off big. Start with healthy plants in fall and give them warmth, light, and water to keep the harvest going.
Read the full article: How to Grow Eggplant in Containers
