Growing Zucchini, also Courgette/Marrow, Summer squash

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

(Best months for growing Zucchini in Australia - sub-tropical regions)

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

  • 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

06 Oct 19, Alex (Australia - temperate climate)
Hi I'm from Melbourne vic. I've had 3 attempts of growing zucchini black jack and so far no success, first attempt the plants we're taken with no trace 2nd they got eaten down to the stem this is my 3rd attempt I put tree guards and snail pellets around them also growing a nasturtium nearby but the leave are getting munched on. What can I do these are only young plants?
04 Feb 20, hi im terry (Australia - temperate climate)
from sa, may i suggest earwigs could be your problem, we followed advice from a friend and put a small amount of olive oil in a clean tuna tin set in the place your zuccs are not to close though, also to check your garden at night when all these nasties come out, good luck.
01 Jan 20, Catherine (Australia - sub-tropical climate)
I had the same problem - I cut off the bottoms of soda bottles, threw away the lids and placed the bottle over the plant, pushing it into the soil enough to stop it from blowing over. I then simply removed the bottle when the plant was looking a little cramped - worked a treat!
07 Oct 19, anon (Australia - sub-tropical climate)
An extreme method would be to make a wood frame about 50cm high and cover with 30% shade cloth. OR put stakes in the ground and use shade cloth or bird netting as a fence. I have 2m x 2m x .5m frame with veggie netting on and around it. Only problem the netting disintergated from flapping on the wood frame. I will replace with 30% shade cloth soon. Or make an arch with plastic pipe or chicken netting and cover with shade cloth. Look around the yard for things you could use.
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.
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
21 Jun 20, Josh (Australia - sub-tropical climate)
TryTromboncino, does amazingly well in a humid SE qld summer where others rot.
31 Jul 19, (Australia - tropical climate)
It is more about planting it the right time. Grab a packet and give it a go.
14 Jul 19, Jack (Australia - sub-tropical climate)
What would you suggest around Brisbane in regard to spacing the plant?
16 Jul 19, (Australia - sub-tropical climate)
Good rich soil 900mm - poor soil 600mm.
Showing 11 - 20 of 239 comments

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