Thanks everyone for all the tips - Gavin, yours is the only reply that isn't coming up for me to quote - they were electric and senshyu, in a raised bed that, although clay, isn't normally too bad for drainage in normal rain as opposed to the winter monsoon. Though, it doesn't get much winter sun (not that there was much anyway!) so, I think it was constantly damp.
Thanks for the tips BabbyAnn and New Shoot for manure and grit, as opposed to compost. I grew some summer onions in compost in buckets - I'll look out for any signs that compost causes rot from now on.
I noticed your location is Scotland shoozie and wonder if autumn is leaving it a bit late to plant overwintering onions and maybe get them planted as early as possible such as any time now up to mid September to give them chance to throw roots out before winter?
You could be right there, it was October when they went in. To be fair, they seemed to take off quite quickly at first til winter descended. But, maybe earlier would give them more of a chance.
I didn't bother with over winter onions last winter shoozie. Onions are cheap as chips to buy in the shops and they don't seem to crop for me as well as either garlic or shallots, both of which I use a lot and consider more expensive. I didn't think they really tasted that much better home grown either. ![happy :)](https://chat.allotment-garden.org/Smileys/green/smile.gif)
I enjoyed the ones that grew, argyllie ... Though with only seven, we had to pace ourselves
![nowink :nowink:](https://chat.allotment-garden.org/Smileys/green/nowink.gif)
but did use a couple as greens and they were a bit of a treat, .... albeit a short lived one
![biggrin :D](https://chat.allotment-garden.org/Smileys/green/biggrin.gif)
. Left two to grow on a bit longer and they made a fine salad size
Last year, I put my overwintering onions into module trays in cold frames and planted them out in spring. That way I was able to control the amount of water each got.
Glad this worked for you Kirpi.
Thanks again everybody, I'll give them another go, some in the ground and others directly in buckets to see if I can get more than seven this time
![biggrin :D](https://chat.allotment-garden.org/Smileys/green/biggrin.gif)