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Eggplant is a warm-season vegetable grown for its glossy, dark purple (or sometimes white, striped, or green) fruits used in cuisines worldwide, from Italian pasta dishes to Asian stir-fries. Gardeners grow it for its reliable yields, attractive ornamental foliage, and rewarding harvests in hot summers. It thrives in USDA zones 5–11 with proper heat and care.

Eggplant seeds require warmth to germinate reliably. Sow indoors 8–10 weeks before your last spring frost in seed-starting mix kept at 70–85°F (21–29°C). Seeds will sprout in 7–14 days under these conditions. They are not light-sensitive but benefit from consistent moisture and warm soil temperature.

Start seeds indoors in late winter (January–February for zone 7 Maryland transplanting in May). Sow seeds ¼ inch deep and keep soil warm and moist. Transplant seedlings into larger pots once they develop two true leaves. Harden off for 7–10 days, then plant outdoors after all frost danger has passed and soil is consistently warm (60°F/15°C minimum, ideally 70°F/21°C or warmer). Space plants 18–24 inches apart in rich, well-draining soil amended with compost. Do not direct sow; eggplant needs the head start indoors in Maryland's climate.

Water deeply and regularly, aiming for 1–2 inches per week and more during hot spells; inconsistent watering causes fruit drop and splitting. Fertilize every 3–4 weeks with balanced or slightly nitrogen-rich fertilizer once flowering begins. Stake or cage plants if they become tall or fruit-heavy. Watch for flea beetles (especially on young transplants—use row cover if needed), spider mites in heat, and verticillium wilt; improve air circulation and avoid overhead watering to reduce disease. Mulch around plants to conserve moisture and regulate soil temperature.

Harvest eggplants when they are glossy, firm, and still tender—typically 2–3 inches in diameter (or full size for your variety) before the skin becomes dull and seedy. Use a sharp knife or pruners to cut the fruit with an inch of stem attached. Harvest regularly to encourage more flowering and fruiting throughout the season. Store eggplants at room temperature for 1–2 weeks or refrigerate for up to a week; they are best used fresh but can also be roasted, grilled, or cooked down and frozen.