As you can see, the blooms form BIG bulblets, get heavy, fall over, and start a new large onion plant. All parts of the onion plant maybe used. (photo is sideways)
Closeup of bulblets. The article below has info on planting, but it should be said, I gave a few to my mom, and she planted them in a sandfilled pot, and has them running out her ears now. Not fertile soil. No extra care at all. Very easy plant.
From Old Fashion Living
Growing Egyptian OnionsEgyptian onions are a very cold hardy, perennial onion that is unique and easy to grow. It's also known as tree onion, top onion, winter onion, or walking onions. This onion is not only edible, it's also ornamental!. At the top of the plant little "bulbs" form that can be used fresh, or they can be stored, much like garlic. Kids will love it for the quirky growth of the bulbs, and it's easy for them to help harvest and plant.
Egyptian onions are hardy to Zone 3, and can be planted in the fall. They are called "walking" onions because of the unique way the bulbs clusters bend down from the weight of the bulbs as they grow, eventually touching the ground, and taking root. You can divide these clusters and plant as you would other onion sets in the autumn. They do have a rather strong taste, so you won't need many! You can also use the green stalks, which are edible, much like green onions or chives.
If you allow the new bulbs to fall over and root, these will sprout for you to use. They are best before the bulbs start to form on the new stalk because they do become tough at that point. There will be enough to use for the stalks, the bulbs and some for planting.
In the early spring you'll be able to dig some of the onions up to use as bunching or green onions.
Plant the small bulbs in soil that is well dug and amended with organic matter such as peat and compost. As mentioned, they are very hardy so should do well even in very cold climates.
Happy Bloomin' Tuesday!