The onion plants were making me nervous. When they arrived, the ground was still frozen. I gave them a drink and put them in the garage, where I figured they would become accustomed to the cold. But the past few days it has been not so cold. Despite their roots being exposed to the air, the onions were trying to grow. So this afternoon, I transferred them to the garden proper. It feels early, but now that I check my (poorly kept) records from last year, I see I am in the ball park: April 1 vs. April 6. Close enough.