GrowSabzHow to grow eggplant in pots
Also called Aubergine, Brinjal, baingan, brinjal · Solanum melongena
بینگن
- ☀️ Sunlight
- 6–8hours daily
- 💧 Water
- 2.2 Levery 2 days, 20 L pot
- 🌡️ Ideal temp
- 21–30°C
- 🪴 Min pot
- 20 L30 cm deep
- 🧺 Harvest
- 65–85days from sowing
- ⚖️ Yield
- 3 kgper 20 L pot
Eggplant drinks far more than most container plants — about 900 ml for every 10 litres of soil, and in hot weather it wants that every single day. Underestimate that and you get the classic result: a plant that looks healthy in the morning and wilts by afternoon.
Short answer
Grow eggplant in a 20 litre container at least 30 cm deep, watering about 900 ml per 10 litres of soil every 2 days, and keep temperatures between 21 and 30 °C. First harvest comes 65–85 days after sowing.
Where to plant it
What size pot does eggplant need?
20 litres and 30 cm deep is the realistic minimum for a single plant. Pick a container below to see what changes.
| Container | Minimum size | Depth | Notes |
|---|---|---|---|
| Pot | 20 L | 30 cm | Use pots with good drainage and consider staking for taller varieties. |
| Grow bag | 20 L | 30 cm | Fabric bags provide excellent aeration and drainage. May dry out faster. |
| Open ground | — | 40 cm | Ensure rich, well-draining soil and adequate spacing between plants. |
| Raised bed | 30 L | 35 cm | Provides excellent drainage and allows for custom soil mixes. Good for root development. |
Watering
How often should you water eggplant?
Every 2 days through the growing season, at about 900 ml per 10 litres of soil — daily in hot weather, every 3 days when it turns cool. Water in the early morning. Drip irrigation or deep root watering works best.
Too little water
- wilting leaves
- flower drop
- stunted fruit
Too much water
- yellowing leaves
- soft stem
- root rot
Avoid: water on leaves; standing water; inconsistent watering.
Climate
Can you grow eggplant where you live?
No hardiness zone needed — compare your actual temperatures against the plant's own limits.
| Ideal range | 21 – 30 °C |
|---|---|
| Survives | 10 – 40 °C |
| Germinates above | 24 °C — best at 29 °C, about 10 days |
| Flowers drop | above 35 °C, or below 18 °C |
| Sunlight | 6–12 hrs/day, best 8 |
| Frost | Highly sensitive — will not survive it |
The flower-drop thresholds matter more than the survival ones. A plant can be perfectly alive at 40 °C and still give you nothing.
How cold is too cold for eggplant? Check your temperaturesEnter your night low and day high — see if it survives, and if it will cropTimeline
Eggplant growing stages, day by day
Click any stage to see what's happening. Durations shift with temperature — a warm season runs roughly a quarter faster than a cool one.
Feeding
Fertiliser schedule for eggplant
Feed on the interval below, changing what you give as the plant shifts from making leaves to making fruit.
| Stage | What to use | Per 10 L | Every |
|---|
How to prepare each feed
Common mistakes
Why eggplant fails, and how to avoid it
- A container that is too small
Below 20 litres the root run is too shallow. The plant grows, flowers late, and drops whatever it sets because it cannot support the crop.
- Watering too lightly
A daily splash wets the top few centimetres and nothing else. Eggplant wants about 900 ml per 10 litres of soil — one deep soak beats three shallow ones.
- Wetting the leaves
Overhead watering in the evening leaves foliage damp overnight, which is exactly the condition fungal disease needs. Water the soil, early in the day.
- Ignoring the flower-drop threshold
Above 35 °C, or below 18 °C, flowers fall before setting. The plant can look perfectly healthy and still give you nothing — shade it through the hottest hours.
- Planting it beside Potato
Shares the same blight diseases and insects (like Colorado potato beetle), increasing the risk of infestation and disease spread.
- Leaving it out through a cold snap
Eggplant is highly frost-sensitive. One night below 10 °C can end the plant outright — bring containers in or cover them.
Companions
What to plant with eggplant
Good neighbours
Repels common eggplant pests like flea beetles and spider mites, and may improve growth and flavor.
Roots produce a chemical that kills root-knot nematodes, and flowers repel other harmful insects like flea beetles.
Its strong scent deters flea beetles, a common pest of eggplants, and other chewing insects.
Acts as a living mulch, keeping the soil cool and moist, and suppressing weeds around eggplant plants.
Legumes fix nitrogen in the soil, benefiting heavy feeders like eggplant, and some varieties can deter Colorado potato beetles.
Keep apart from
Shares the same blight diseases and insects (like Colorado potato beetle), increasing the risk of infestation and disease spread.
Both are members of the nightshade family and are susceptible to many of the same pests and diseases, leading to increased competition and disease pressure.
Attracts the corn earworm (also known as the tomato fruitworm), which can also damage eggplant fruits.
Produces substances from its roots that inhibit the growth of many vegetables, including eggplant.
Releases juglone, a chemical highly toxic to the nightshade family, causing fatal wilting in eggplants.
Problems
Eggplant pests and diseases
Each lists the weather that brings it on, so you know when to start checking rather than reacting once it's established.
Flea Beetles humidity any · temp >18
Tiny, jumping beetles that chew small, round holes (shot-holes) in leaves. Severe infestations can stunt growth, especially in young plants.
Colorado Potato Beetle humidity any · temp 15-30
Adults are yellow and black striped beetles; larvae are red with black heads. Both feed voraciously on leaves, causing severe defoliation.
Aphids humidity any · temp 15-25
Small, soft-bodied insects that cluster on new growth and the undersides of leaves, sucking sap and secreting sticky honeydew. Can transmit viruses.
Spider Mites humidity <50% · temp >27
Tiny pests that cause leaves to look stippled, pale, and eventually turn yellow and drop. Fine webbing may be visible on the undersides of leaves.
Verticillium Wilt humidity any · temp 21-27
A soil-borne fungal disease causing yellowing and wilting of leaves, often on one side of the plant. Stems may show discoloration when cut.
Phytophthora Blight humidity >80% · temp 20-30
Causes rapid wilting, stem rot at the soil line, and water-soaked lesions on leaves and fruit. Favored by wet, warm conditions.
Blossom End Rot humidity any · temp any
A dark, sunken, leathery patch appears at the bottom (blossom end) of the fruit. Caused by calcium deficiency, often due to uneven watering.
Powdery Mildew humidity 50-70% · temp 20-27
White, powdery fungal spots appear mainly on the upper surface of leaves. Causes leaves to yellow and die off prematurely.
Bacterial Wilt humidity any · temp >25
Causes sudden, irreversible wilting of the entire plant, even when soil moisture is adequate. Often more prevalent in warm, humid climates.
Eggplant Fruit And Shoot Borer humidity any · temp any
Larvae bore into tender shoots, flower buds, and fruits, causing wilting of shoots and damage to fruits. A major pest in many eggplant-growing regions.
Harvest
When to harvest eggplant
First picking falls between day 65 and day 85, and the plant then keeps producing for about 60 days. Pick often — what you leave on the plant signals it to stop making more.
How to tell it's ready
- Glossy, firm skin
- Good size for variety
- Seeds are still soft
How much to expect
Storing it: Room temperature for a few days, or refrigerated in a plastic bag for up to a week.
Questions
Eggplant: common questions
How long does eggplant take to grow?
About 85 days from sowing to the first harvest, with picking usually starting between day 65 and day 85. It then keeps producing for roughly 60 more days. Warm weather pulls that forward; cool weather pushes it back.
What size pot does eggplant need?
At least 20 litres and 30 cm deep for one plant. A raised bed wants 30 litres of soil and 35 cm of depth.
How often should I water eggplant?
About 900 ml per 10 litres of soil, every 2 days in normal weather — daily when it is hot and every 3 days when cool. Water in the early morning.
What temperature does eggplant need?
It does best between 21 °C and 30 °C and survives from 10 °C to 40 °C. Seed needs soil above 24 °C to germinate, ideally around 29 °C.
Can I grow eggplant in winter?
Not outdoors anywhere that frosts — it is highly frost-sensitive and will not survive it. In a frost-free winter it grows slowly; anywhere colder, treat it as a warm-season crop.
How do I know when eggplant is ready to harvest?
Glossy, firm skin; Good size for variety; Seeds are still soft. Once picked: room temperature for a few days, or refrigerated in a plastic bag for up to a week.
How much does one eggplant plant produce?
Roughly 3 kg from a 20 litre container, or about 7 kg in open ground. Larger containers give proportionally more, up to a point.