If an onion sprouts in my kitchen can I plant it and grow my own onions?

This is what found in my produce basket over the weekend. One of my store bought onions had sprouted!

After sharing my find with friends I began to ask myself the very question that gave this post it's title.
"Could I grow my own onions from my discovery?" I had to know.

Off I went to consult the interwebz...because of course, it knows everything.

Turns out, while you can plant an sprouting onion like the one you see in my picture, it will only continue to grow green stalks and perhaps eventually flower and make seeds.

It will not, however, grow another large onion like the one at the base of the plant. This is because it is already in its second stage of growth where the new onion plant is using the old onion flesh for nutrients as it grows.

The cool thing is that once the new plant produces seeds, you will be able to plant those and grow more yellow onions from the seedlings.

You also have the option of cutting up the green part of the plant and using them as scallions, which are super yummy with soup, baked potatoes, and more!

So there you have it! Yes, the sprouted onion can be planted...but no, it won't grow more large onions itself.