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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

21 Nov 17, Hannah (New Zealand - temperate climate)
Hello, I am new to growing vegetables in general, and am really enjoying it. I recently planted three courgette plants, and did as instructed on the label which was to plant on a raised bed. They are not looking 100% happy at the moment, drooping a bit and some of the leaves are bit burnt/brown around the edges. I was wondering on some good tips for growing courgettes? And how often I should be watering them? Thanks. H
19 Nov 17, Phil (Australia - temperate climate)
I have some zucchini planted alongside a bed of sweet potato and have just read zucchini should not be planted alongside potatoes! The potato bed is secure in a raised bed. Please advise the issues? Regards................
20 Nov 17, Mike (Australia - cool/mountain climate)
Potatoes are said to inhibit the growth of Zucchinis etc. Ever want to know - google google google lol
09 Nov 17, Dale (Australia - sub-tropical climate)
I have planted 2 zucchini seeds close to each other and about 60 to 80 cm further on another 2 seeds close together.( as they say to plant 2 or 3 seeds in a clump and then keep only the healthiest one) Well , 2 came up so healthy ,right next to each other, and I don't want to pull out one and throw it away...can I re plant it or just leave it there (about 3 or 4 weeks old) The other 2 don't look as healthy,(not sure why that is .)
10 Nov 17, Mike (Australia - sub-tropical climate)
It might be a bit late to transplant now - you will really set it back by transplanting it. Next time don't plant them so close. When you transplant always try and have soil around the roots. Leave it there but keep the water up and maybe a touch of fert in a couple of weeks.
08 Nov 17, Lizzy Miller (Australia - temperate climate)
Hi there my ? is can I cut the underside leaves from a productive plant, as the are becoming intrusive on my herb garden. Thank you. Cheers Lizzy.
10 Nov 17, Mike (Australia - sub-tropical climate)
Yep cut them.
07 Nov 17, Cherie (Australia - sub-tropical climate)
I am growing a yellow zucchini variety, mulched and composted. Trying to be consistent with the water but it's hard in the stormy weather here in Bris. Plant looks healthy and happy and fruiting well, but none make it to edible size as they get squishy and brown at the flower end (Blossom end rot?), When I break them off and open there are maggots inside... Any experience and ideas to fix this issue, not the first year, or variety, I've had this problem, though the worst it's been.
08 Nov 17, Mike (Australia - sub-tropical climate)
A couple of things. 1. Zucchinis need bees to pollinate or you have to do it by hand ( break off a male flower and peal the flower part back and rub the female flower). 2. You need both male and female flowers to be able to pollinate (sometimes there is all male flowers and sometimes all female flowers - happened to me this year). 3. Wet weather brings moths grubs and disease - water down low around the plants and not on the plant - also if watering the plant do it in the morning so it dries out before night. 3. With the storm season happening it is probably too late for zucchinis now. A thing for blossom end rot is some Epsom Salts - google about doing it - it works for tomatoes. By this time of the year I normally have all my plants harvested - summer too windy, too hot and chance of wrecking storms - like last night - Bundaberg.
08 Nov 17, Matt (Australia - sub-tropical climate)
Zuchinni, pumpkin, rockmelon and such are now just starting. Early fruiting generally does not get pollinated as well as it does in a week or two's time. From your description your female fruit buds are not pollinated and then they rot and get infested with fruit fly larvae or similar. Try hand pollinating your female buds with a male bud at this stage in the season and this will secure fruit production. Strip the male buds covers and wiggle around the inside of a female bud, that will ensure pollination. Use your finger in soil if it comes out with material on it don't water, if not, water well once every 3 days. Regards Matt
Showing 11 - 20 of 245 comments

Try plastic milk bottles cut in half over the seedlings overnight. Also large pieces of orange peel, large enough for the snails to hide under, can help catch them.

- Darren

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