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Growing Zucchini, also Courgette/Marrow, Summer squash

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

(Best months for growing Zucchini in USA - Zone 5a regions)

S = Plant undercover in seed trays 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 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

13 Aug 17, Mike (Australia - tropical climate)
The notes here say August is the latest month you can plant (too hot after that). Would have been preferable to have planted seeds 1-2-3 months ago. You could try seedlings - that would have you a couple of weeks ahead of seeds. Probably some shade during the middle of the day might help. Plenty of water at the root zone and not the leaves. Read the notes on this website for zucchini. I would say you have given your papaya trees too much nitrogen. I doubt if you can prune it. If you cut the top off it probably would die.
16 Jun 17, Delores Victory (USA - Zone 5a climate)
When is the last month to grow zucchini?
26 Apr 17, Maree (New Zealand - sub-tropical climate)
Can you sucessfully grow zuchini plants in containers, and if so, how deep + wide should the container be for one plant please?
26 Apr 17, John (Australia - temperate climate)
Yes you can. I have done it but the biggest challenge is to keep them moist enough so you don't get any setbacks. I used 400 mm (16") diameter plastic tubs.
05 Apr 17, Aloese Lefono (New Zealand - temperate climate)
Can they still grow and produce from April on?
07 Apr 17, John (Australia - sub-tropical climate)
By April, zucchinis and other members of the Cucurbit family (pumpkins, cucumbers, etc will be starting to die off. You may get a few more days that will ripen some of them but you are probably better to remove them and plant cabbage, cauliflower, etc or prepare the soil for broad beans. Check the page for your climate zone for other things to plant.
30 Dec 16, Chris (Australia - sub-tropical climate)
As soon as my zucchinis flower and produce fruit they quickly seem to die off, stop growing and die off before they are even 120mm long?
03 Jan 17, John Mauger (Australia - temperate climate)
Sometimes early female flowers don't set as they haven't been pollinated. It could also be water stress but I rather think the first. Give them a bit of time and they should settle down.
28 Apr 17, Shane hull (Australia - sub-tropical climate)
powdery mildew don't like alkaline environment. Milk is alkaline
29 Dec 16, Heather Price (Australia - temperate climate)
Hi My Zucchinni plans have a white covering over the leaf does this affect the plant.dio l need to treat it , if so what would l treat the leaf iwith
Showing 11 - 20 of 221 comments

All spraying should be done when the weeds are small before flowering - early in the morning or late in the arvo - no wind. It is a waste of spray if the weeds are not in a growing stage - as in, if it has been dry for awhile. Plants need to be growing to be able to move the chemicals through the plant. Use some dishwashing liquid in the spray - helps to stick better to plant leaves. If in a lawn mow regularly before it seeds and mow lower than normal to gather more seeds up if seeded already. Use Kamba M or a Bindi and clover weedicide. Or pull it out by hand after rain or watering. Have to keep at it to get on top. "The trick to stopping bindii from spreading is to spray them in winter as soon as you see them, before the prickles develop, and continue to repeat spray every 3 weeks until they are gone. Repeat spray is important as this will control weeds that have germinated after prior spraying."

- Mike

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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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