Growing Eggplant, also Aubergine

Solanum sp. : Solanaceae / the nightshade family

Jan F M A M J J A S O N Dec
                S S    
                    T T

(Best months for growing Eggplant in New Zealand - cool/mountain regions)

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings

September: Bring on in pots - need a long growing season

  • Grow in seed trays, and plant out in 4-6 weeks. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 24°C and 32°C. (Show °F/in)
  • Space plants: 60 - 75 cm apart
  • Harvest in 12-15 weeks. Cut fruit with scissors or sharp knife.
  • Compatible with (can grow beside): Beans, capsicum, lettuce, amaranth, thyme
  • Avoid growing close to: Potatoes
  • A seedling
  • Eggplant

A large bushy plant with attractive purple flowers. Different varieties have different colours and sizes of fruit, ranging from the 'classic' large purple to the Thai small white varieties and Brazilian red.

Has spiky stems. Wear gloves to harvest fruit as the spikes on the calyx are sharp enough to break one's skin.

In cold climates grow in heated greenhouse and reduce artificial heat during summer.

Perennial in tropical climates otherwise grown as an annual.

Needs a long season. Start under cover and plant out when frosts have finished. Some varieties with slim, long fruit such as Asian Bride produce their fruit earlier. Mulch well and keep well watered. May need staking.

Culinary hints - cooking and eating Eggplant

Cut and use the same day if possible.
Slice, no need to peel, and fry in olive oil.
Brush with oil and grill or bake.
Or microwave, plain, for about 4 minutes on high.
Makes a good substitute for pasta in lasagne or moussaka.
Can be smoked over a gas ring or barbecue, cooled and peeled and used to make dips.

Your comments and tips

05 Feb 24, Annette James (New Zealand - temperate climate)
I have 2 healthy looking plants of the large purple variety. They are producing flowers ok but no fruit. Any ideas on why this is happening?
12 Feb 24, (New Zealand - sub-tropical climate)
May be no bees - try hand pollination in the mornings.
27 Aug 20, Srini K (New Zealand - sub-tropical climate)
Hi, I have sown seeds in seed trays and its been 20 days, no sign of any seedlings. Understand its still cold in Auckland, Just wanted to check if the seeds will germinate once its get warm or I should considers sowing seeds again when its gets warm?
28 Aug 20, Anonymous (New Zealand - temperate climate)
You need soil temperature of min of 15c and preferably 25-30c to germinate egg plant. The guide recommends planting seeds Sept Oct. Also if you over water the seeds they go rotten. Seeds should germinate in 12-18 days. Have a little dig around and see if they are ok or rotten. I would suggest planting mid Sept at the earliest. Or buy seedlings.
02 Sep 20, Srini K (New Zealand - sub-tropical climate)
Thanks for your response. The guide for sub-tropical climate suggests to plant in Aug, Sep. Great news all seeds germinated in approximately 22 days :) Cant wait to plant these outside.
02 Jun 18, Caroline (New Zealand - cool/mountain climate)
I have never grown eggplant before but successfully grew 6 plants this year outside in Invercargill. They produced well and have just started to die off now that we are getting frosts every night. I have harvested all the fruit but was wondering if it is worth leaving them in the ground for next year or just pulling them out and starting again next year.
13 Sep 18, Mike (New Zealand - temperate climate)
Read the notes at the bottom of the page.
04 Jun 18, Liz (New Zealand - temperate climate)
Your eggplants will probably die off completely during the winter, so it would be best to start again with new ones in Spring.
20 Jan 18, Diana (New Zealand - temperate climate)
I live on the Tutukaka coast and have a healthy looking eggplant with lots of flowers which fall off without fruit forming. Why is this happening and what can I do? Thank you.
09 Mar 23, Thumbellina (New Zealand - sub-tropical climate)
I’ve found “tea” made from banana skins really does help them to flower and set fruit! So easy. I just water them with it a few days in a row, and hey presto. It worked for me. Google it and give it a go!
Showing 1 - 10 of 33 comments

I see that you recommend planting eggplant in the spring. Before I found this website, I was using UF's recommendations which supported planting eggplant in the fall. Will eggplant planted in the fall produce much fruit?

- Gayle Bryan

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This planting guide is a general reference intended for home gardeners. We recommend that you take into account your local conditions in making planting decisions. GardenGrow is not a farming or commercial advisory service. For specific advice, please contact your local plant suppliers, gardening groups, or agricultural department. The information on this site is presented in good faith, but we take no responsibility as to the accuracy of the information provided.
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