Growing Zucchini, also Courgette/Marrow, Summer squash

Cucurbita pepo : Cucurbitaceae / the gourd family

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

(Best months for growing Zucchini in Australia - temperate regions)

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

September: Frost tender

  • 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 21°C and 35°C. (Show °F/in)
  • Space plants: 50 - 90 cm apart
  • Harvest in 6-9 weeks. Cut the fruit often to keep producing.
  • Compatible with (can grow beside): Corn, beans, nasturtiums, parsley, Silverbeet, Tomatoes
  • Avoid growing close to: Potatoes

Your comments and tips

Post a comment or question Display Newest first | Oldest first, Show comments for Australia | for all countries
07 Oct 19, anon (Australia - sub-tropical climate)
Go on the net and look for a natural spray - usually soapy water mixed with other things. Probably you have some grubs.
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30 Jul 19, Peter (Australia - tropical climate)
Hi, Can someone recommend a successful Zucchini variety for a hot tropical area such as Katherine, Northern Territory? Thanks
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21 Jun 20, Josh (Australia - sub-tropical climate)
TryTromboncino, does amazingly well in a humid SE qld summer where others rot.
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31 Jul 19, (Australia - tropical climate)
It is more about planting it the right time. Grab a packet and give it a go.
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14 Jul 19, Jack (Australia - sub-tropical climate)
What would you suggest around Brisbane in regard to spacing the plant?
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16 Jul 19, (Australia - sub-tropical climate)
Good rich soil 900mm - poor soil 600mm.
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17 Jun 19, joe graham (Australia - temperate climate)
as with my egg plant my zucchinis are still producing most times 3 from each plant every 3 days'they are the blackjack variety. the seed was planted first week of December. whats happening is climate change causing this to happen. its middle of June temperate climate is it normal. thanks for any advice
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08 Feb 19, Alana (Australia - cool/mountain climate)
Hi, i have big healthy plants buth but the fruit are turning yellow and shrivelling. Ive harvested 6 out of around 20 ive had to throw away. Ived been trying hand pollinating but it seems to make very little difference. Are there any other issues that could be causing this?
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10 Feb 19, Mike (Australia - sub-tropical climate)
Read up about pollination - it could be some disease - I have no idea.
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11 Jan 19, paul stanley wood (Australia - sub-tropical climate)
try natural spray a mix of onion garlic boil cool strain and spray that easy
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Look at deep mulch no dig for at least a year. Plant mature seedlings into mulch. All weed seeds should die. Much will improve your soil. Thick layer of newspapers is critical.your goal is to eliminate light.

- Alison Sizer

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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. Gardenate 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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