Well, I didn’t put my onions into flats like you did. I stuck them out in a bed. I don’t see anything yet but I did have a bit of excitement (for me) today when I went out and saw my tater experiment was working. I used a method somebody emailed me from DIY. You plant the taters in a large trash bag in only 4 inches of mulch. Started them a month early because I could move the trash bags into the greenhouse for the freezes. Well, I got poo-poo’d by a couple of people around the area where I live. But, I got taters up today.
For this when the taters come up you add a layer of leaf mulch or just crushed up leaves to cover up the tater leaves each time they start poking through. That way when the taters are ready to harvest you’ve got layers of ‘em all up and down the trash bag. Since they did come up - I am at least started with the experiment. Will keep you posted on the progress through the spring.
“Will keep you posted on the progress through the spring”
I am anxious to hear how this works out for you. Was thinking of trying it myself. It’s a bit early for me to start (and besides, my potato starts haven’t arrived yet)