Aubergine

A true heat-lover that needs a greenhouse or a warm, sheltered spot to ripen well in the UK. Start early indoors and glossy purple fruits follow from midsummer.

Written by Yemi · Last reviewed August 2026

Waiting this month
First sprouts in 10–21 days

Difficulty

Aubergine

Out of season right now. The next sowing window opens in January.

Growing Calendar

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sow
Transplant
Harvest

This month: Oct

Plan ahead for this crop

  • •Check growing conditions
  • •Prepare for next stage

Sowing Guide

What you'd find on the seed packet

Sow Depth

5mm

Spacing

45–60cm

Germination

10–21days

Thinning

One plant per 9cm pot; do not thin, pot on individually

Grower's Note

A heated propagator at 21–25°C makes a significant difference to germination. Below 18°C, most seeds fail to germinate at all.

Recommended Varieties

'Bonica' holds an RHS Award of Garden Merit and is the classic choice for an unheated greenhouse, cropping early with large glossy fruit. 'Kaberi' also holds an AGM, thornless and compact, bred specifically for containers with fast-maturing, egg-sized fruit. For organic growing, The Organic Gardening Catalogue lists 'Rosa Bianca' as an open-pollinated Italian heirloom alternative, worth trying under glass in a UK summer.

Planting Out Guide

Best spaces, conditions and how to plant out

Plant Spacing

45–60cm

Best Grown In

Greenhouse borders, grow bags, large containers

Conditions

Full sun, warm. Rich, free-draining compost. Keep under cover until nights are reliably above 10°C.

Grower's Note

Grow bags in a heated greenhouse give the most reliable UK yields. Feed with a high-potash fertiliser once the first flowers appear.

Growing Stages

Approximate weeks from sowing to harvest

Sprouting

2wks

Establishing

8wks

Maturing

10wks

Total~20 weeksfrom seed to harvest

This week for your aubergine

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Water

Every 2–3 days

Sunlight

6+ hours direct sun

Watch Out For

Red spider mite thrives in the hot, dry air aubergines love. Mist plants regularly and increase humidity; introduce Phytoseiulus predators if an infestation takes hold

Aphids cluster on growing tips and flower buds. Check weekly and spray with a dilute soap solution or introduce Aphidius biological controls

Flowers drop without setting fruit in cool conditions. Keep temperatures reliably above 15°C at night and mist or tap flowers gently to aid pollination

Pests & Problems

Full guide

Red Spider Mite

Fine pale stippling

Jun–Sep

Aphids

Colonies on growing tips

May–Sep

Botrytis

Grey mould on stems, leaves, or fruit

Apr–Jun

What You'll Need

Equipment for growing aubergine

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Common Questions

About growing Aubergine in the UK

Can I grow aubergines outdoors in the UK?

Only in a warm, sheltered, south-facing spot in a good summer, and even then results are unreliable. A greenhouse, polytunnel or large sunny conservatory gives far more consistent results in the UK climate.

Why are my aubergine flowers falling off without fruiting?

Flower drop is usually caused by cool temperatures, low humidity, or poor pollination. Keep night temperatures above 15°C, mist plants to raise humidity, and gently tap or brush open flowers to help pollen transfer.

How many aubergines will one plant produce?

Limiting each plant to 5–6 fruits gives noticeably better size and flavour than leaving it to set more. Pinch out extra flowers once this number has set.

When should I harvest aubergines?

Harvest when the skin is glossy and taut, usually 16–20 weeks after sowing. A dull, matte skin means the fruit is overripe and the seeds inside will have turned tough and bitter.

Written from real growing experience, organic methods only. Our story · Our approach

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