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

12 Aug 21, Carol Rose (USA - Zone 9b climate): I found Dixondale Farms to be a great help. I ordered my onion slips form them. I had never ordered onion slips before so I was a little nervous about the process. I wasn't able to plant them when they arrived but I cared for them as per instructions and only lost a few before I could get them into my newly made raised beds. I planted sometime in early June I think and they are about 3 weeks or so form being ready. I live on the Central Coast of California and these onions look great. As a pretty new organic gardener I love to share my successes. Ck out Hollis and Nancy's homestead on YouTube. It is so helpful!!
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28 Feb 21, Barbara Esparza (USA - Zone 9b climate): Are there any onion sets that I can plant in Texas zone 9b that are more heat resistant?
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02 Mar 21, Anonymous (Australia - sub-tropical climate): Plants generally have a temperature range that they grow in. That is why most crops are seasonal in a district. Try planting out of that range and you could fail.
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02 Apr 21, Debbie h. (USA - Zone 9b climate): Can you plant onions that already have a green stem coming from it? Like ones in fridge if not used fast enough .
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08 Apr 21, Anon (USA - Zone 4b climate): Put the question into google and it will explain how to do it.
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22 Jun 21, Jayne Matzkin (USA - Zone 9b climate): I've done it. You take the outside layers off until you reach the layers the green stem is attached to and plug it in your garden. They become a bigger version of themselves. I see this a way of not wasting that onion and tossing it.
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07 Oct 22, Janelle (USA - Zone 10a climate): Yes, I just did exactly that this summer. Instructions on previous reply are correct.
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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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02 Jun 22, Rick Nuffer (USA - Zone 7a climate): do walla walla onions grow well in Utah?
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Growing Onion

Allium cepa : Amaryllidaceae / the onion family

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Ask a question or post a comment or advice about Onion

Gardenate

Keep your garden growing - see what to plant right now

Growing Onion

Allium cepa : Amaryllidaceae / the onion family

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Ask a question or post a comment or advice about Onion

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