Onions bulb when the day length is long enough for that variety even if they have not been planted long enough to developed use able onions and if you plant a long day length onion in Brisbane it may not produce a bulb planted some sweet Spanish seed that i was given and going by previous posts some onions do not get very big in Brisbane the sweet Spanish may be a problem. Have grown other varieties of onions and did not get big onions but did get usable onions.Brisbane gets 13hours 50 min in December.It seems that time of planting and variety is important for onions .
Hunter River Brown onions where the ones i grew last time it seems that buying seed by the gram is lot cheaper then purchasing packets but onion seed does not keep very well one company is selling 1 kilo for close to $300 if you purchased by packets would be close to $3000 .
What quantity of seed is produced by each onion plant.
If indeed Onions produce viable seed here in Briz anyway. Some colder-weather plants eg Carrots may not seed at all so it's potluck seeds :-( Each plant only has one compound flower head and without counting the flowers, I reckon it'd be about 20 seeds max from each plant. If you are planning to grow kilos and kilos of Onions, buying a bulk lot of seed could be the way to go. Keep some of your own seeds to grow and trial them along side the bought ones. What you don't use to grow full-sized Onions you could use for sprouts/micro-greens. Or re-sell the excess here on BLF.
Green harvest have onion seed seed for sprouting wonder what you end up with if grow out could be good for spring onions they recommend "Onion seed is short-lived so store it in the freezer"
South of Canberra Sydney seems to be where long day onions can start to be planted.
As with Peas, even for sprouting or micro-greens, Onions prefer the cool weather. If the seeds are cheap enough to experiment with, I'd love to know how they turn out. I've eaten onion sprouts in mixes and you don't need many onion sprouts to make a big difference.
never had much success with onion seed ( or carrots either ) even in Melbourne ! often grow onions from the bottoms - if they have enough roots left on http://www.instructables.com/id/Grow-Onions-from-Discarded-Onion-Bo...
and carrots from the tops !
The little onion that I was calling a Japanese onion (Rakkyo onion) is a CHINESE perennial onion. Sorry if I have misled anyone. It can be left in the ground to multiply or lifted to consume. Often used as a pickling onion.
I always trip up on the options but here's a list:
Also: :LIST OF ONION CULTIVARS : LINK
I also have middling success -- sometimes -- with Leeks.
Bunching onions ( aka Welsh Onion) appears similar to bulb onions during early growth stages, but bunching onions do not form bulbs and instead are harvested for their green hollow foliage.
Chives (aka Allium schoenoprasum) form a cluster of low-growing, narrow, hollow leaves. After every two or three leaves have formed, axillary buds form side shoots that then allow for the development of a cluster of shoots (Brewster, 1994). The shoots are attached to each other on a rhizome.
Chinese chives. Allium tuberosum syn A. odoratumi grows wild in East Asia and is cultivated for its garlic-flavored leaves and immature flowers. It forms rhizomes similar to those of chives, and the leaves arise as dense clumps from these rhizomes (Brewster, 1994). Unlike true chives, which has a hollow stem, the leaves of Chinese chives are flat.