I always grow onions from seed with nearly 100% success. I think seeds are a better value and they won't ever bolt on you. You can keep some indoors just for the tops & transfer the rest to the garden in a few weeks for onion bulbs. Start them indoors. They pop up in a few days and you can already harvest the tops.

No reason for not growing sets in pots. Just be sure to keep them at least a couple of centimeters apart, so they are easier to separate when planting time does arrive.

Of course you can grow sets. I just wanted to share my success story w seeds. BTW have you seen the Super Blood Moon last night? Happened around 10:30pm EST. The moon turned an intense red...pretty remarkable! It was a crystal clear night last night and it was right above my head.

Thanks for confirming what I thought. The sets were a present from my daughter. I usually grow onions and leeks from seed.

Didn't see it last night as we had cloud cover. I saw my first one when I was about 10 over Newcastle upon Tyne. At the time I was told it was to do with the pollution from the industry on the Tyne.
Seen many since and they are always spectacular.
I must say I am fed up with some of the 'names' they are given, this time super blood wolf moon.

Yeh I'm not sure about all the names either. I think the moon was somewhat closer to the earth so it appeared larger. However I think it was only visible in the Western Hemisphere & I had to go out at midnight to see it and it is super cold out.

I always start them off in pots. I later transfer them to the ground after I get around to preparing it. They seem to do well.

I once heard a suggestion for sowing I think it was peas in length of half drain pipe and then just sliding the whole thing into a trench at planting out time. Wonder if it would work with sets?
Lovely full moon here but it was the normal colour.

thanks for the confirmation that this is a good option.
the red [eclipse] was last night around midnight Stera so it is just a normal moon tonight and now its waning. we have cloud again and forecast for rain :o(

Onion sets now in compost in the greenhouse :o)
bitterly cold however.

Hi! I have always grown onion sets in containers without any problem and I am not green fingered. As Tugbrethil says, be sure that you space them apart. The advantages for me is there are far fewer weeds and bugs! I leave them in and harvest them from there Good luck!