For the first time in my 10years of having an allotment I don't think we will have any onions. The sets planted in April are smaller than my spring onions and only have 5-6" foliage above ground. My leeks and spring onions are in the same bed and are doing well so I know its not the soil and I have a 4 year crop rotation cycle. Everyone elses are doing ok. Any suggestions as to why?
Have you pulled up any of them to have a look at the roots and insides?
Spring planted onions on our site aren't looking too good and it is mostly down to the allium leaf miner.
I didn't plant any onions this year, but I've had allium fly in my walking onions. I've had bad outbreaks in ordinary onions before now; is the leaf growth distorted?
Not distorted, just small.
I planted my banana shallots out in May, they have just sat there! I think they are a bit dry, but despite watering them they are clearly doing nowt. First year I've failed with them..and my spring onions failed to germinate as well so I'm clearly doing something wrong!