Love, Love, Love your hoop house! I can see how you can continue growing throughout the season as the plants can tolerate the cold in there. I found that the cucamelons were too tough for my liking. I only grew them once. Oh my, 500 onions is a lot! lol
Tough? Hmm. I won't be too upset so if they don't grow for me.
I still have a few hundred good onions left from last August's harvest that'll keep us going until the next lot are ready. In our house, every meal starts with an onion!