ねぎ Green Onion

これ、両方ネギなんですけど、すごくサイズが違うでしょ。左はお店で買ってきたもの。右は使ったくずを外に植えておいたもの。同じ品種のはずなんですけどね。立派に育ったもんです！こうして使うと、お得ですね。
Those are both green onions, but the size is so different, isn't it!  The left one is the one I just bought from a store.  The right one is from my garden.  I planted the bottom parts of the green onions after I used the top parts and look how well it had grown.   They must be the same species.   This is the way to do it to get most out of what you paid for.