Hi! Any idea on what those are? I found them in my raised bed while preparing it for the spring season. They look like little onions but have the texture of potatoes.
That is highly variable based on which type of green onion you've got and they don't literally turn into onions. Some just grow large, onion-like bulbs.
I grow multiple types of green onions from seed and they do not all grow bulbs no matter how long you leave them in the ground. Imagine tiny leeks, for example.
Try looking up seeds for various type of green onions and you'll see how they can vary quite a bit.