Growing Onion

Allium cepa : Amaryllidaceae / the onion family

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

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

  • S = Plant undercover in seed trays
  • T = Plant out (transplant) seedlings
  • P = Sow seed
  • 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 8°C and 30°C. (Show °F/in)
  • Space plants: 5 - 10 cm 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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29 Sep 22, (South Africa - Summer rainfall climate)
A plant going to seed is finishing it's life and producing seed to continue the cycle of life - new plants. A plant then puts most of it's energy into producing the seeds. Time to harvest now or real soon.
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27 Sep 22, Dalton Thomas (USA - Zone 2a climate)
Im from Tropical rain season all year round area and Im planing to grow white onion. How can I succeed on growing bunch of white onion. Any good idea? Im from republic of Palau.
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29 Sep 22, (Australia - tropical climate)
Try planting at the begining of your driest part of the year.
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24 Sep 22, digna carwell (USA - Zone 10a climate)
Hello I lived in 10A zone I would like to know when is the best time to grow , onions , garlic, carrots and mist vegetables? Thank you in advance for your response.
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03 Oct 22, (USA - Zone 4b climate)
Check the planting guide for each crop.
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07 Sep 22, Don Cropper (South Africa - Summer rainfall climate)
I am growing Australian Browns which I grew inside green house and planted out.They are making flower stems but the onions aren't ready to pull out yet.Can I leave the flowers to grow or must I cut them off.
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13 Sep 22, (South Africa - Summer rainfall climate)
Sounds like your soil wasn't fertile enough to produce an onion bulb. The plant is going to seed already.
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23 Aug 22, Adam Kulka (Australia - temperate climate)
Could you please advice why always my onion growing seeds heads, I try to grow from seeds or from last year young ones but no luck to have nice bulb in end of the growing season, I'm in Suthern Highlands NSW, thank you
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29 Aug 22, (Australia - sub-tropical climate)
Do you plant the right time and is your soil fertile. Plants will go to seed if nutrient runs out. Regular watering also.
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10 Aug 22, vivian gibson (USA - Zone 9b climate)
I have texas grano onions to make set. blue lake pole beans, purple hull peas, tomato(transplant),Bell pepper (Trans plants) when do I plant? putting them in my big pots these are all going into large pots.
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Showing 41 - 50 of 366 comments
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Since you are having problems with your Texas Grano -- I would recommend going to an Egyptian walking onion (or other walking onion). Video abojut the onion can be found here: https://www.bing.com/videos/riverview/relatedvideo?q=walking+onions&mid=17F7CAB6E4A914745E4A17F7CAB6E4A914745E4A&FORM=VIRE Additionally: the walking onion originated from a cross between the Welsh onion (Allium fistulosum), and the common onion (Allium cepa). The Egyptian walking onion, Allium x proliferum, is a member of the allium family and a great addition to the perennial vegetable garden. Egyptian onions go by many names, including tree onions, topset (or topsetting) onions, and walking onions. The seeds are slow growing, and can take several years for them to grow and flower. That’s why people grow them mostly from established bulbs. Every part of the Egyptian walking onion is edible, including the bulb in the ground, the stems, the flower, and the aerial bulbils. There are different varieties -- some zones 3-9 others 3-10. I would select a 3-10 for your area -- additionally some types grow substantial bulbs under ground -- others have small underground bulbs -- so select your variety based on your need. There are white, brown and purple walking onions. There is also the RED CATAWISSA WALKING onion -- which is not classified as an Egyptian walker -- but is still a walking onion: this variety for its larger sized bulbs and topsets that are much larger than the typical walking onion. All parts of the plant are edible. Walking onions are a standard choice for permaculture gardens and food forests -- they are very low maintenance - and very reliable -- so a good choice for anyone having difficulty growing regular onions.

- Celeste Archer

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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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