Hello,
Where exactly do you live? I live in zone 6 in the south central Ohio area. My latitude is 39.6. I have grown Redwings for years and they have done well for me. However I now notice that this is outside the recommended zones from reading the Johnny's catalog.I have also grown Mars which has done equally well for me. I grow Candy and Copra,too and they grow well for me.
I have found that despite the catalog descriptions that no red onions store very well. My storage conditions are less than ideal however.
Did you ever find any Red Candies? I'd love to try those, but I couldn't find a source for seed.
Karen

Karen I live in Muncie Indiana. My latitude is 40.19. I got the seeds from Johnnies and they said they may produce heavy stems and small bulbs. I thought as long as I got a long day thats all that was necessary. No, I'm still looking for red candies. I would love to hear from you if you find them. Maybe we can split the seeds if you want.. I think Burpee may sell the seeds, but I'm not paying their prices. So do you notice your rewing not producing large bulbs?

My Redwing produce 2 1/2 to 3 1/2 inch in diameter bulbs. I plant my onions about 4 inches apart, because I do not want my onions to grow too large. I hate having to store a partially used onion because the onion was too large for a receipe. I think if I spaced the onions farther apart that they would probably grow larger.
Mars looks like it is a little better adapted to your zone. Totatlly Tomatoes carries the seeds. I've grown it too but I didn't see any real difference between the two varieties.
Burpee's prices have gone through the roof. When I first started gardening many moons ago, I only ordered from Burpee. Now they have priced themselves out of my budget. They carry an onion named Red Delicious but not Red Candy. I tried Red Delicious years ago but I don't remember anything about it's performance.
I'd give the Redwings a try unless you are very limited on space. If I find any Red Candies I'll let you know.
Karen