It ain't a granex. Looks more like a bunching type onion to me or possibly some variety of garlic. Those aren't onion leaves. Onions are round and hollow, at least in my experience
After having closely looked at the picture again what I think this is, is that someone planted an entire bulb of garlic and all of the cloves have now sprouted and are growing.
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.