bull neck on overwintred onions

some of my overwintered onions have bull necks (so my sister says) she reckons i over manured them.
is she right? some do have a thick neck i agree, also some went to seed, and about half developed normal big onions.  Should i not be manuring them well?

I would not worry too much. Most over-wintered onion's do not store that well anyway.

well it looks like i was abit over enthusiatic then, so i reckon ill put them in the squash area this november with no added extras (or just abit of leafmould)  and see what happens.

on the onion theme: when is the right time to plant out the seeds that i will be starting off myself in trays next spring? i didnt plant this years on the plot till may, was that too late, as they are still small (they are ailsa craig)
(and are the requirements the same reference the manure?)

Sorry to go on, but i love my onions

I use my over wintered onions from June throughout the Summer, whilst waiting for the best Summer crop I can get. I get more bolting onions from the over wintered crop than the Summer one ... 5% to date this year... Setton.
This year I used a few chicken manure pellets on the onion beds, and the greenery does seem rather more lush than normal I guess but that might be down to the variety. But the onions do seem to be behaving and starting to bulb up nicely.
   
The thickest necks on the onions do recede somewhat as the onion goes into shut down mode and then through the drying process. I haven't had any storage problems at all, but then I tend to poke and prod and filter out for first use those that feel likely to not last. I'm very fond of my onions, they have few problems apart from a bit of white rot fluff if planted in a certain part of my plot. It's nice to have a crop that reward you consistently.

well thanks to you all for passing on your tips for successful onions.  i thought i was getting it wrong somewhere but couldnt find out where till i posed direct questions on here. 
as you say seaside its nice to have a crop that are so rewarding.
many thanks to you all