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 75°F and 90°F. (Show °C/cm)
  • Space plants: 24 - 30 inches 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

13 Jan 25, Andy (Australia - tropical climate)
Planted seeds and transplanted months ago into well drained garden bed. Now nearly 1 m tall with lovely purple fruit setting. Water once daily but minute yellow dots turning all leaves into dusty looking yellow leaves. Fruit still growing and seems OK. No evidence of insect infestation. What am I missing?
25 Jan 25, Fay (Australia - sub-tropical climate)
Do the leaves feel dusty? If so, mites. Rinse leaves immediately, especially the underside, then get a miticide like wettable sulphur or need oil or... Have you scratched the surface of the ground? Water may not be penetrating.
23 Jan 25, Peter (Australia - tropical climate)
Possibly a fungal problem from the high humidity we're experiencing in Bundy right now. You might see the same yellow dots on frangipani leaves this time of the year. Try a simple copper spray.
08 Oct 24, Robert (Australia - tropical climate)
My plants are thriving, approximately 1mtr tall. Big green bushy leaves. About how long till flowers appear & then fruit. Excitedly yours, Rob
28 Oct 24, (Australia - sub-tropical climate)
Should be soon but don't over fertilise them.
24 Sep 24, margaret (Australia - temperate climate)
My eggplant appears to be growing well, producing flowers. The eggplant forms but turns green. How can I fix this please.
08 Feb 25, kalpa (Australia - temperate climate)
There is a variety of eggplant - Thai Eggplant which is green (another is white)
22 Aug 24, KARIMA (Australia - temperate climate)
Hi, I have cut back my egg plants which gave us very large fruit in summer. Should I hope that it grows back or buy more seedlings. I am in Sydney. thanks
23 Aug 24, (Australia - sub-tropical climate)
They’re perennial so yes, it should regrow if it hasn’t been damaged frost.
18 Mar 24, (Australia - sub-tropical climate)
Our aubergine never grow more than about 300mm tall and the leaves are purple if they produce fruit it is very small about size of a bantam egg. Any ideas?
Showing 1 - 10 of 358 comments

I’ve grown several eggplants for the past three years with great fruiting results. Of course as soon as one plant started to look “oldish” I’d cut that one right back (quite heavily) give it a decent fertilizing (liquid if in a pot or granular if in the ground) and it would recover just great. I also gave it a really good soaking watering immediately after or with the fertilizing. I’d do that about every 6 months for each plant (but not at the same time so as to ensure a continual fruit supply). However just recently those plants have had it… Just plain worn out… I suspect a very heavy build up of root knot nematodes and the start of root and stem collapse. I reckon if you can get 2-3 years from an eggplant then that’s more than enough and then call it quits. From my observations you can get up to 3 years happily from a plant growing in the soil and about 2-2.5 years from one growing in a large container. The pruning back also helps a lot in controlling a pest problem like spider mites. I live in a lovely sub-tropical climate on the Gold Coast so the plants continually grow and fruit. The variety I like is the dwarf Lebanese type. I am about to publish an e-book on growing herbs and veggies in small spaces but more about that later Cheers John

- John Bee

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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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