About 2 or so months ago I bought this onion from the store, stashed it in a dark cabinet, and forgot about about it. I recently found it again while doing some spring cleaning, and it had begun to sprout! It was still inside the loosely tied plastic produce bag, and it looks pretty healthy. I planted my first garden last year, so I'm still pretty new to this and I don't know much about onions. My question is: can I plant this little guy in my garden? If so, how and when should I do it?