We have fresh green onions year round. As long as the ground is not too froze for me to pull them up, I just run out to the garden and get fresh onions whenever I need them. If the ground is frozen, I have to take the hoe but I still get my onions.
Winter onions are great. They are so different from regular green onions yet they are so much alike. In early spring, the onions can be picked as young tender green onions.
In about April, the begin to for a single onion set on the top of the onion.
This single onion set then turns into two onion sets
As the onions sets multiply, you can see the bud open up.
This one is a bit blurry but you can still see that the onion sets begin to grow the green of the onion while still on the "mama" onion.
This time of year, you will see the onion sets forming on the tops of the green onions.
The tops of the green onions with green sprouts already growing from the sets. You can now separate the bulbs from the tops of each onion and plant it anew. They will grow and you can eat them from now on. Yes, winter onions are good and tender all year long.