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Eggplant needs more sustained heat than tomatoes — transplant only after nights stay above 15°C (60°F), give it full sun, and expect fruit 65-85 days later. Stake plants, harvest fruit while the skin is still glossy (dull skin means overripe and bitter), and watch for flea beetles, which riddle young leaves with shot-holes. A seedling costs $3-6 in the US, a few rupees in India.
Key facts
- Domesticated in South and East Asia over 2,000 years ago; India and China still grow around 85% of the world's crop.
- The name 'eggplant' comes from early white-fruited varieties that looked like goose eggs hanging on the plant.
- More heat-demanding than its tomato and pepper cousins — fruit set is poor below about 21°C (70°F) daytime.
- Like other nightshades, leaves and unripe green parts contain solanine-type alkaloids and shouldn't be eaten; the ripe fruit is safe.
Care requirements#
| Plant type | Outdoor warm-season annual (a tender perennial in frost-free tropics) |
| Growing medium | Rich, well-drained soil with compost; thrives in 30-40L containers, which also warm up faster |
| Light needs | Full sun — 6-8+ hours of direct light daily |
| Sowing season | Start seed indoors 8-10 weeks before last frost; transplant when nights stay above 15°C (60°F) |
| Water frequency | Deep, even watering 1-2 times a week; drought stress makes fruit bitter |
| Temperature range | Best at 21-32°C (70-90°F); fruit set fails in cool weather and flowers drop above ~35°C |
| Spacing | 45-60cm between plants, 75-90cm between rows |
| Fertilizer | Balanced feed at transplant, then higher-potassium feed once flowering starts |
| Soil pH | 5.8-6.8 |
| Support needs | Stake or small cage — fruit-laden branches snap in wind |
| Companion plants | Beans, marigold, thyme; avoid following tomatoes or potatoes in the same bed (shared diseases) |
| Toxicity | Leaves and stems contain solanine-type alkaloids — don't eat them; ripe fruit is safe |
Growth & propagation#
| Days to harvest | 65-85 days from transplant, longer in cool spells |
| Yield per plant | 4-8 full-size fruit, or many more for small-fruited Asian varieties |
| Harvest cue | Skin glossy and springs back slightly when pressed; dull skin means overripe, bitter, and seedy |
| Edible parts | Fruit only, ideally cooked; leaves and stems are not eaten |
| Propagation methods | Seed started indoors with bottom heat (24-30°C soil for germination) |
| Pruning needs | Pinch the growing tip once established to encourage branching; remove leaves touching the soil |
Common problems & troubleshooting#
| Symptom | Likely cause | Fix |
|---|---|---|
| Young leaves riddled with tiny shot-holes | Flea beetles — the classic eggplant pest, worst on small transplants | Cover new transplants with row cover until flowering, dust with kaolin clay; large plants outgrow the damage |
| Flowers drop without setting fruit | Temperatures too cool (below ~21°C day / 15°C night) or too hot (above ~35°C) | Wait for stable warm weather; in marginal climates grow in containers against a warm wall or in a polytunnel |
| Bitter, spongy fruit with hard seeds | Fruit left too long on the plant, or drought stress during development | Harvest while the skin is still glossy and water evenly; smaller fruit tastes better than oversized |
| Sudden wilting of whole branches despite moist soil | Verticillium or bacterial wilt, soil-borne diseases nightshades share | Pull and bin affected plants; rotate nightshades to a new bed for 3-4 years or grow grafted/resistant plants in containers |
| Fine speckling and bronzing on leaves with webbing | Spider mites in hot, dry weather | Spray undersides with water regularly and apply insecticidal soap; mites hate humidity |
Harvest at glossy, never dull
Sodate tracks days from flowering so you check fruit right in the glossy-skin window instead of finding bitter, seedy overripe fruit.
Seasonal care#
Varieties & cultivars#
| Variety | Distinguishing trait | Note |
|---|---|---|
| 'Black Beauty' | Classic large, glossy deep-purple oval fruit | The standard Western market type |
| 'Long Purple' / Asian long types | Slender 20-25cm fruit, thinner skin, faster to mature | Better choice for shorter seasons |
| 'Pusa Purple Long' | Popular Indian brinjal, long glossy purple fruit, heat-hardy | Widely grown across India |
| 'Rosa Bianca' | Round lavender-and-white Italian heirloom, mild and creamy | Needs a long warm season |
Buying checklist#
- Seedling is stocky with dark green leaves, not leggy or pale
- No shot-hole flea beetle damage on the leaves
- Not already flowering in the pot — stressed early bloomers stay stunted
- Roots not circling the pot base
- Pick fast-maturing Asian types if your summer is short or mild
Pricing by region#
| Region | Price range | Typical unit | Basis |
|---|---|---|---|
| US | $3 – $6 | Single seedling, 4in pot | Garden centre + nursery retail |
| UK | $3 – $7 | Single plug plant (aubergine) | Garden centre retail |
| India | $0.1 – $0.5 | Seedling or seed packet | Local nursery + agri supply |
| Australia | $3 – $7 | Single seedling | Nursery + garden centre |
| Canada | $3 – $6 | Single seedling | Garden centre retail |
USD figures are approximate conversions for comparison; switch the dropdown to see each region's actual local-currency listing price.
Often confused with#
Name confusion warning#
Three names, one vegetable. This plant is 'brinjal' in India (and older UK usage), 'eggplant' in the US, Canada, and Australia, and 'aubergine' in Britain and Ireland. Seed catalogues use all three — they are the same species, Solanum melongena, so match on the variety name rather than the common name when buying.
Where it's actually grown#
Seedlings are raised by regional greenhouse growers timed to the local planting season, since young plants don't ship well. Seed production is concentrated in India, China, and Thailand, where most commercial breeding of both Asian and Western types happens.
Import & biosecurity restrictions#
| Region | Note |
|---|---|
| Australia | Seed imports require permits and phytosanitary certification; live seedlings cannot be imported personally under biosecurity law. |
| US | Domestic seed and seedling sale unrestricted. |
| UK | Seed freely available; aubergines generally crop best in a greenhouse or polytunnel in the UK climate. |
| India | No restriction on conventional seed — brinjal is a staple crop; note that Bt (GM) brinjal remains unapproved for commercial cultivation in India. |
| Canada | Home-garden seed packets clear without issue; short seasons favour fast Asian varieties or greenhouse growing. |
Similar plants
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Frequently asked questions
Are brinjal, eggplant, and aubergine the same plant?
Yes — all three names refer to Solanum melongena. Brinjal is the Indian name, eggplant the North American one, and aubergine the British one.
When should I harvest eggplant?
While the skin is still glossy and springs back slightly when pressed. Once the skin turns dull the fruit is overripe, bitter, and full of hard seeds.
Why won't my eggplant set fruit?
Almost always temperature: fruit set fails below about 21°C daytime and flowers drop in extreme heat above 35°C. Even watering and patience through cool spells usually fixes it.
Can I grow eggplant in a pot?
Yes — a 30-40L container in full sun works well, and the warmer root zone actually suits eggplant in cooler climates. Stake the plant and water more often than in-ground.
Are eggplant leaves poisonous?
Leaves and stems contain solanine-type alkaloids and shouldn't be eaten by people or pets; the ripe fruit is safe when cooked.