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Growing Zucchini, also Courgette/Marrow, Summer squash

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

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

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

  • 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 70°F and 95°F. (Show °C/cm)
  • Space plants: 20 - 35 inches 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

27 Oct 18, Cesare Stella (New Zealand - cool/mountain climate)
I never bothered, I just lay them down
17 Oct 18, Gill (New Zealand - cool/mountain climate)
I have sown 2 sorts of courgette. The older seed (Italian) germinated as normal. The new seed purchased this spring has done nothing (the common yellow). At this stage seed pots are indoors
23 Oct 18, Mike (New Zealand - temperate climate)
Check to see if the seeds have rotted or not. Maybe they need a little sunlight to germinate.
19 Sep 18, Bess (New Zealand - temperate climate)
Is it advisable to pinch out the growing tips to stop the plants from getting too big? Thanks!
20 Sep 18, Mike (Australia - sub-tropical climate)
NO!!! The longer it grows the more zeeks you pick.
12 Oct 18, Mike (Australia - sub-tropical climate)
I have plants that are 5-6' long and still bearing zeeks. i want to pull them out but a fellow at the men's shed keeps hand pollinating them and they keep producing fruit. They are 5.5 months old.
06 Apr 18, Gaynor (New Zealand - sub-tropical climate)
How can I grow zucchini’s in Auckland in the winter thanks.
09 Apr 18, mike (New Zealand - temperate climate)
I don't believe you can grow them during winter, maybe with a good glass house and heater but you'd also probably need to hand pollinate.
04 Feb 18, Peter Wilson (New Zealand - temperate climate)
How can I tell when my zuchinies are ready for picking
04 Feb 18, Quarteracre Kiwi (New Zealand - temperate climate)
Hi Peter - Leave them as little or as big as you like. If you pick them when they are about 25cm long, they will be lovely, fleshy and seedless. If you leave them past this point, they will quickly become marrow, which are watery and full of seeds. Give them a twist and they will come off with a bit of stalk. They will keep for a good while in your veg chiller of your fridge. If you get lots, you can grate them and freeze them in ziplock bags for winter. Give them a squeeze in a teatowel after thawing though.
Showing 11 - 20 of 48 comments

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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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