What variety? I grew 'Bedforshire Champion' and they weren't great either. I multi sowed them so they may have been a little over-crowded? Lack of phosphorus is sometimes the reason - rarely though. The spring weather may have played it's part too. Whatever you have will still be ok. Button onions can be quite tasty. Have another try with a different variety or try sets instead of seed.
There's no onions you can grow now, they are day length sensitive so you'll have to wait until next year. My onions are normally ok medium sized, but this year they were terrible I've got a wheelbarrow full of pickling onions to deal with instead of eating ones!
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I grew 'Bedforshire Champion' and they weren't great either.
I multi sowed them so they may have been a little over-crowded?
Lack of phosphorus is sometimes the reason - rarely though.
The spring weather may have played it's part too.
Whatever you have will still be ok. Button onions can be quite tasty.
Have another try with a different variety or try sets instead of seed.