Growing Onion

Allium cepa : Amaryllidaceae / the onion family

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

(Best months for growing Onion in Australia - tropical regions)

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings
  • Easy to grow. 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 46°F and 86°F. (Show °C/cm)
  • Space plants: 2 - 4 inches apart
  • Harvest in 25-34 weeks. Allow onions to dry before storing.
  • Compatible with (can grow beside): Lemon Balm, Borage, Carrots, Beets, Silverbeet, Lettuce, Amaranth
  • Avoid growing close to: Peas, Beans

Your comments and tips

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25 Oct 24, Nadege (Australia - temperate climate)
I imagine the best way would be to cover the plants with some wire bird netting, it can be easily bent into shape and onions and parsley will be able to grow through it but I'm not sure the lizards will climb the wire. the other alternative could be to have a dedicated feeding spot where you could provide small amounts of green waste for the lizards so they don't come after your plants.
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04 Mar 24, Mary (USA - Zone 8a climate)
Do onion sets do well in a container?
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07 Feb 24, Brenda (USA - Zone 5a climate)
What do you mean when you say plant out
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12 Aug 24, Vicki (USA - Zone 8a climate)
Plant out means to plant your transplants out into the garden.
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07 Feb 24, (USA - Zone 5a climate)
Hi, it means to take the seedlings you've grown from seed, and plant them in the ground or bigger pots.
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08 Feb 24, (USA - Zone 5a climate)
Thanks
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26 Dec 23, alfred rockhold (USA - Zone 6a climate)
i live in wv
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09 Dec 23, Gill (New Zealand - temperate climate)
How much watering do onions like. On tank water so hoping not heavy drinkers
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14 Dec 23, (New Zealand - sub-tropical climate)
Just give a watering 2-3 times a week depending on how hot it is.
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29 Nov 23, Themba Peter (South Africa - Summer rainfall climate)
I have onions that need transplanting is it the right time, will appreciate the advice.
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Hi there Im a development Horticulturalist with Fairfield city council, I just wanted to find out what types of onion are transplanted from seedling. The reson i ask is i have only ever heard of direct sowing of onion seed and transplanting is very unsucessfull (especially in your common spanish, white and brown varieties).

- Matt

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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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