Posted: 11/09/2014 at 18:18
If I were you I would have another go either this Autumn or next Spring with new sets. They do not need to be netted. Start them off in modules so that they have little green shoots when you plant them then the birds won't pull them up thinking they are good to eat. Mice can dig and don't usually touch onions anyway.
You can pickle the onions that are big enough. If you try to plant the little bulbs this Autumn or next Spring they will go straight to flower and will be useless.