From
Melonpopzdropz.... my fb friend Janine posted this link late last nite. I just saw it this morning since Lil Sister kidded under the dually last nite in the nasty storm that rolled thru...
This to me is actually an easier was to propagate onions compared to planting the seeds and then waiting for them to grow enough for seed onion sets for next season. Here's the content from the link....
Making a bag of onions last forever-
It makes me wonder why more people don’ t
do this. I thought about it and I thought that maybe a lot of people
just don’t know how. I should just blog the process and enlighten
you. It is heaps of fun and certainly a way of providing all the
onions you will ever need for your household.
This is how step by step:

Materials to start.
Slice of the onion base or save the base from your dinner preparation tonight.
- You will need:
- any onion
- a sharp knife
- board
- pot with some soil

The onion base
Slice the onion at the base root end,
leaving a decent amount of onion attached. I like to think of that as
nourishment the plant will need until it can survive alone, only my
theory. Leave this base for a few hours to dry just a little or form a
skin if you like, it hardens a little and toughens.
Place the onion base in soil either in the pot or directly into the
garden. Make a spot for it and sit it gently down on to the ground with
a faerie push.. not hard and gently cover with some soil about enough
to cover it 2cm or so. Water well

- onion sprouted in the garden

Onion shoots dug up for splitting
Roots start to form and this is evident
when green shoots start to appear above the ground. Keep watering and
when sufficient roots and a plant have formed. Dig it up.

sliced shoot to make two plants
This step is important and now its time to multiply what you already
have. One onion will usually form 2 or more separate plants. You will
see this in the base you have dug up.
Go back to your sharp knife and board and
slice through these separate onion plants leaving root stock on all of
the separate pieces.

Peel off any excess onion from the shoot. You will know this as it has already begun to separate from the onion.
Make a nice spot for your new baby onions and plant. Once in the
ground slice off the green 2/3 of the way down the green. Don’t panic
this will be good for the plant and it will grow true strong leaves
then.

The spot should have plenty of room because before very long you will have a continuous bed of onions growing and harvesting!
I hope this explains the process of what
I do here almost daily. I have been doing this for awhile and it has
become very apparent to me as I said in the beginning that a lot are
not aware how to do this! No one I showed except one person knew,
that one person didn’t have success and thought they did it wrong! They
did, the didn’t separate after shooting the first time!
Food should not be the price it is in shops and controlled by
multinational companies. It is FOOD. Take back ownership of at least
the onions. This process I have outlined is just one simple way you
can at least provide your own family with relatively free onions
forever!
Happy Gardening!
Ps Garlic can be planted as simple as well. I will blog that process separately down the track!
Just briefly though with the
garlic
you separate a garlic and plant the pieces in to the ground by sitting
the bottom / root end gently on the well prepared ground /
don’t cover with dirt..
Do then cover with about ten inches of
Mulch..
that’s it… no pictures here yet! I will do this soon! No need to
panic yet as its too early for planting for optimum! You plant latest
of summer just before autumn or fall as some of you may call it! 9mths
in the ground.. cut the flowers and pull up a month after the flower
chopping!