Should I plant these?

I plant onions in the planting area to repel bugs. Onions flowers can be big and showy, enough that my neighbor asked what it is. I think onions are biennial, seed every other year.
 
@ they're not going to grow like potatoes Teresa. Better off just to plant the top. Planting the whole onion is problematic they're way too big to be onion starts.
 
Hmm, I haven't tried cutting the top for planting because the roots are on the bottom and once I planted them whole, roots usually grow within a week below. Plus, I have pill bugs which tends to eat anything with water including onions. No, onions won't repel pill bugs.

I have cut green onion, radish, carrots bottom from supermarket and replant them. The onion bottom dried up quickly here or be eaten by pill bugs.
 
I got a bag of onion starts from Walmart garden center because my wife said that she wanted to grow onions. I have never grown onions. These pics are from the Walmart website. There is a pic of how to plant them. I also saw a YouTube video, IIRC it was Millennial Gardener he described planting them like that, not buried completely below the surface of the soil. I planted the onion starts from 0.5"-4" deep in soil. Maybe not the right way but they are sprouting now about 2"-3" tall. There were so many in that bag, I think it may have been 1 lbs. I planted them everywhere. In the flower beds, in the Bald Cypress trees 25 gallon pots, in and around our potato plants, in a pot of compost soil. Finally I just dug two holes and threw the last two handfuls of them in the holes. 6 or 7 in each hole. I'm sure I didn't plant them the right way but it will be interesting to see which ones grow the best, if any.

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Onion tends to grow big for me so I usually plant a few only. But I plant a lot of garlic. It is pretty compact. I even plant some with the mulberries and sunchokes since they attract bugs here.
 
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