Growing Onion

Allium cepa : Amaryllidaceae / the onion family

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	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 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

05 Jul 21, Jacqueline (Australia - temperate climate): I'm interested in planting red onions, I am growing spring onions, and leeks quite successfully but know nothing about red onion planting and care. Could you please advise me. I only have a small balcony style garden.
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10 Jul 21, (Australia - sub-tropical climate): All the onion family are pretty similar to grow. Plant them similar time as spring onions and leeks. If you want more info google
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08 Aug 21, anne onn (Australia - temperate climate): telling people to google something on a plant website is just lazy. @Jacqueline, you can safely plant the red onions as if they were spring onions, just allow for more space between the plants Note: Gardenate does not advise google - we assume that is how the questioner found our site)
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07 May 21, Pablo checkman (South Africa - Dry summer sub-tropical climate): How many month it takes Africans best onion
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10 May 21, (South Africa - Semi-arid climate): Read the notes here, www.gardenate.com/plant/Onion?zone=22
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02 May 21, Michele (New Zealand - cool/mountain climate): I seem to have gotten white rot/fungus tha affects most onion varieties except spring onions- they will get it but very late on...does anyone know of a vigorous type of ordinary brown or red onion that might stave it off until I can harvest? Thanks.
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10 May 21, Tony (New Zealand - temperate climate): try spraying regularly with copper, also good for rust.
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06 May 21, Anonymous (New Zealand - temperate climate): Ring your local agricultural or agric company department about the fungus.
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06 Apr 21, Duke Rick (USA - Zone 8b climate): What is the best time to plant Maui onion seeds in my zone?
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05 Jan 22, don (USA - Zone 10b climate): when you are on this page - just above the title
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Growing Onion

Allium cepa : Amaryllidaceae / the onion family

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