Growing Onion

Allium cepa : Amaryllidaceae / the onion family

Feb	Apr	May	Jun	Aug
S			S
	T	T		T
		P

(Best months for growing Onion in Australia - sub-tropical 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 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

24 Oct 18, Michael Jones (Australia - temperate climate): when do i plant cipollini onion seeds in west Australia
Reply or Post a new comment
25 Oct 18, Mike (Australia - sub-tropical climate): Read the guide here. Plant first half of the year - probably after Feb - summer probably too hot.
Reply or Post a new comment
18 Oct 18, Malcolm Langley (Australia - sub-tropical climate): I planted onions last season and thined out where necessary and had a reasonable crop.this season l did it a bit differently. I planted the seeds into pots and then replanted into the ground so that I didn't waste any by thinning out. The seeds used were the from the same suppliers and were brown onions as before. This season they are growing well but most of them have very thick stems and seed pods are formed. The onionbulb in lots of instances is not developing .am l doing something wrong? Mal.
Reply or Post a new comment
23 Oct 18, Mike (Australia - temperate climate): I had this problem this year. First time I had grown onions. I put it down to too rich a soil. Maybe less N applied. And probably back off the watering a bit when they have grown for say 4 mths.
Reply or Post a new comment
06 Oct 18, Wayne (Australia - temperate climate): Onion Red Odourless: Planted sixty seedlings in April which have been growing well but are now going to flower and bulbs have not formed. (Adelaide Hills)
Reply or Post a new comment
07 Oct 18, Mike (Australia - sub-tropical climate): I grew onions for the first time this year. Mixed success. White ones. Some formed bulbs some didn't - good health plants - probably too much N. Onions can take 6-8 mths to grow.
Reply or Post a new comment
12 Mar 18, Albert (Australia - temperate climate): When do l plant a giant decorative allium and how deep.? any other advice would be appreciated.
Reply or Post a new comment
13 Mar 18, Mike (Australia - tropical climate): Type into google
Reply or Post a new comment
17 Jan 18, Joe Branco (Australia - temperate climate): Why are brown and white onions sown at different times
Reply or Post a new comment
27 Nov 17, John (Australia - temperate climate): Hello and thanks for your time I would like to grow red onions i live in the wrstarn suburbs of Adelaide when do I plant seed thank you .
Reply or Post a new comment

Showing 51 - 60 of 193 comments

See comments for all plants

Ask a question or post a comment or advice about Onion

Your name

Where are you?

Email address

Please provide your email address if you are hoping for a reply

Your question, comment or advice

All comments are reviewed before displaying on the site, so your posting will not appear immediately

Gardenate

Keep your garden growing - see what to plant right now

Growing Onion

Allium cepa : Amaryllidaceae / the onion family

Your comments and tips

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

Your comments and tips

Ask a question or post a comment or advice about Onion

Become A Supporter!

Planting Reminders