Eggplant
Also known as
Aubergine, Brinjal, Garden egg, Guinea squash
Keep this plant’s care guide close at hand.
Get the appAbout Eggplant
Solanum melongena, commonly known as eggplant, is a warm-season perennial subshrub typically grown as an annual in temperate climates. Native to South Asia, it forms a bushy plant 0.6–1.2 m tall, sometimes with soft spines, bearing large, softly pubescent leaves. Star-shaped violet flowers with prominent yellow anthers mature into glossy berries in an array of forms—globe, oval, or elongated—and colors from deep purple to lavender, white, green, or striped. It thrives in long, hot summers, preferring rich, well-drained soil and consistent moisture. Although largely self-pollinating, flowers respond to buzz pollination by bees, improving fruit set. A heavy feeder with a long season, it performs best with warm soil, steady nutrition, and staking to support heavy fruit. Harvest fruits while glossy and slightly immature for tender texture and mild flavor; overmature fruits become seedy and can taste bitter. Widely cultivated across tropical and subtropical regions, eggplant is a versatile culinary staple suited to roasting, grilling, braising, and stir-frying.
Taxonomy
Properties & Requirements
How to care for Eggplant
Water
Keep soil evenly moist but never waterlogged. Provide about 1–1.5 inches (25–38 mm) of water per week, delivered deeply via drip or soaker hoses to encourage deep roots and reduce foliar disease. Water in the morning so leaves dry quickly. In hot, windy weather or sandy soils, increase frequency to maintain consistent moisture. Mulch to slow evaporation. For containers, water when the top 2–3 cm of mix feels dry, ensuring thorough drainage; avoid letting pots sit in saucers of water.
Light
Provide full sun: at least 6–8 hours of direct light daily, with 8–10 hours ideal for best yields. In very hot climates, brief light afternoon shade can reduce stress and improve fruit set. Indoors or in greenhouses, supplement with high-output grow lights (PAR-rich) for 14–16 hours to match summer intensity and prevent leggy growth. Keep foliage well-spaced to reduce self-shading and disease. Avoid deep shade, which leads to poor flowering, weak stems, and small, sparse fruits.
Nutrients
Eggplant is a heavy feeder. Before planting, incorporate well-rotted compost plus a balanced base fertilizer (e.g., 10-10-10) into the bed. After transplanting, side-dress 3–4 weeks later and again at first bloom with a fertilizer higher in potassium (e.g., 5-10-10 or tomato formula) to support flowering and fruit quality. In containers, use a rich potting mix with slow-release feed and supplement with a weekly liquid feed at half strength. Avoid excessive nitrogen, which promotes lush foliage but delays and reduces fruiting. Ensure adequate calcium and magnesium.
Temperature
Eggplant thrives with daytime temperatures of 24–32°C and nighttime 18–24°C. Growth stalls below 15°C and injury occurs near 10°C; protect plants from cold snaps. Excessive heat above about 35°C, especially with hot nights, can reduce pollination and fruit set—provide light afternoon shade or evaporative cooling in heatwaves. Soil should be warm (≥21°C) for transplanting and 25–30°C for best germination. Frost is lethal; grow only after all danger of frost has passed and maintain warm, sheltered conditions.
