Cultivar profile

Eggplant

Solanum melongena

Eggplant is a warm-season hydroponic fruiting crop best suited to drip-fed substrate, Dutch bucket, or supported container systems, where it can produce glossy.

Varieties

Variety	Latin Name
Globe eggplant	Solanum melongena
Japanese eggplant	Solanum melongena
Chinese eggplant	Solanum melongena
Thai eggplant	Solanum melongena
White eggplant	Solanum melongena

Lookalikes

Lookalike	Latin Name	Description
Tomato	Solanum lycopersicum	Related solanaceous crop with similar flowers but smaller compound leaves and juicy fruits.
Bell Pepper	Capsicum annuum	Another warm-season solanaceous fruit crop, but fruits are hollow rather than dense-fleshed.

Edible Parts

Part	Use	Description	Toxicity
Fruit	Primary edible crop eaten cooked, grilled, roasted, fried, or stewed.	Harvest fruits when glossy, firm, and before seeds become hard.	Cooked fruit is generally edible; avoid leaves, stems, and bitter unripe solanaceous tissue.
Leaves and stems	Not edible crop parts.	Foliage supports photosynthesis and fruiting; prune lightly for airflow.	Solanaceous foliage contains glycoalkaloids and should not be eaten.

Propagation

Part	Method	Description
Seed	Warm germination in starter plugs	Sow seed in moist starter plugs and keep warm; seedlings grow slowly at first.
Seedlings	Transplanting established starts	Transplant once seedlings have strong roots and several true leaves.

Growing Parameters

Parameter	Range	Optimal	Unit
pH	5.5 - 6.8	5.8 - 6.3	pH
Electrical conductivity	2.0 - 3.8	2.4 - 3.2	mS/cm
Air temperature	18 - 32	23 - 28	°C
Daily light integral	18 - 32	22 - 28	mol/m²/day

Cultivation

Aspect	Compatibility	Notes
Dutch bucket	High	Well suited because large fruiting plants can be individually supported and fertigated.
Drip irrigation with inert media	High	Common approach using coco, perlite, rockwool, or similar media.
Nutrient film technique	Low	Not ideal for mature eggplants because plants are large and roots can overwhelm channels.

Identification

Growth habit: Warm-season fruiting solanaceous plant with upright branching growth, broad leaves, and a bushy form that benefits from support.
Leaves: Large oval to lobed leaves are often slightly fuzzy or rough, with prominent veins and sometimes purple coloration.
Flowers: Star-shaped purple to lavender flowers with yellow centers form at leaf nodes and develop into fruits.
Fruit: Glossy fruits vary from large oval purple types to long slender, round, white, green, striped, or miniature forms.

Aphids

Small soft-bodied sap-sucking insects that cluster on tender growth, leaf undersides, flower buds, and stems. In hydroponic systems they can reproduce quickly.

Whiteflies

Small sap-sucking insects that live mostly on leaf undersides and fly up in white clouds when disturbed. In hydroponic and greenhouse systems they weaken plants.

Thrips

Tiny slender insects that rasp plant tissue and feed on released cell contents, causing silvering, scarring, distorted new growth, black fecal specks, flower.

Spider Mites

Tiny sap-feeding mites that live mostly on leaf undersides and damage plants by piercing cells, causing pale stippling, bronzing, leaf drop, fine webbing, and.

Root-Knot Nematodes

Microscopic plant-parasitic roundworms that invade roots and stimulate gall or knot formation. In hydroponic and soilless systems they are most likely.