I've grown Wallas for many years here in Zone 4a. I start them 2 weeks after the storage onions on March 15. Storage onions I start March 1. I also plant them 2 weeks later than the storage onions. They don't seem to be quite as hardy.

I just inventoried my trays and stuff and many of my covers are broken. I think i got some new ones last year, but I didn't finish that part of the inventory.

Just one month and I will be starting stuff too...