Growing Onion

Allium cepa : Amaryllidaceae / the onion family

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

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

  • S = Plant undercover in seed trays
  • 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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08 Sep 23, enie (South Africa - Summer rainfall climate)
is there onion variety that you can grow around November in south africa
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14 Sep 23, Anonymous (South Africa - Semi-arid climate)
Check the planting guide - Dec onwards.
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20 Aug 23, Michael (Australia - temperate climate)
Can you please tell me the best varieties of onion to plant now. Live at Canowindra NSW Thanking you
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06 Sep 23, Anonymous (Australia - sub-tropical climate)
Which ever variety you prefer.
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22 Jul 23, Joseph (South Africa - Summer rainfall climate)
Is it okay to plant Texas grano onions in August and September. I am in mpumalanga, South Africa
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20 Jun 23, Sue (New Zealand - temperate climate)
My onions got a rusty fungus on the last year how do I guard against this happening again. I grew the multiplying onions found them in the garden centre as Welsh Onions. They were great until they developed the fungus.
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24 Jun 23, jim (New Zealand - temperate climate)
Copper copper copper I had same problem last year onions,garlic and leeks sometimes gardening is a pain but I still do it ??? Remember to use a sticker "sprayfix" by yates is one but most garden chemical people do similar it helps to break down the surface tension so the spray does not just run off do it before it appears and repeat it several times during the season only problem with it raining constantly it's hard to do right now. P.S. my mum used to grow welsh onions in the UK when I was a boy never saw enything like rust ?
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15 Apr 23, Mike (Canada - Zone 3a Temperate Short Summer climate)
Growing onions from seeds What kind should I grow? When? Can I start then before winter, or do I start the seeds in January indoors?
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26 Apr 23, Erin (Canada - Zone 5b Temperate Warm Summer climate)
You need a long day onion, you can start seed ahead of time indoors, do not save seed packets, they're only good for a year.
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19 Apr 23, (Canada - Zone 3a Temperate Short Summer climate)
Read the planting guide at the top of the page and plant the variety you want to eat.
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Showing 21 - 30 of 368 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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