I have been searching for a bulbing onion that will grow in my part of California for years. I live on the central coast in between San Francisco and L.A. The summers are hot/dry and the winters are cold/wet. The stores tend to carry long day onions so they don't get very large over here. Short days are difficult to find, so I've grown my own. They rarely do well. A friend gave me a pack of red torpedo's and I grew them as a green onion. I didn't get to them in time and they bulbed out. I was impressed. I ran out after a couple of years and couldn't find them anywhere, so I tried the Red Long of Tropea. It turned out to be the same onion. It is the only bulbing onion I have consistent success with. It also has a flavor different than any onion I have every tasted. It almost tastes like a shallot. Also, it will bulb at different times of the summer. My first batch was ready by July and I had a second batch in September.