[rowlandwells]

we have in the past sowed onions from seed firstly in modules then pricked out in pots to overwinter in the greenhouse but although we do get some onion plants that we can plant out in the spring its a bit hit and miss

following on from that I've been  told onions for overwintering do best in a cold frame or under a plastic sheet like a plastic hoop like John was talking about in his news letter so I'm thinking about trying this method sowing under a hoop or poly sheet

I know its a bit early to think about Autumn sowings but its always best to get advise prior to sowings so do i sow the seed in the greenhouse then prick them out and sow the plants individually in rows under the poly sheet or poly hoops ?

the variety I'm going to grow  subject to advise is a Japanese [overwintering variety] Element [Moles seeds] so to get the best advise why not ask the professional growers or gardeners on this site what they think on this topic 

[Subversive_plot]

we have in the past sowed onions from seed firstly in modules then pricked out in pots to overwinter in the greenhouse but although we do get some onion plants that we can plant out in the spring its a bit hit and miss

following on from that I've been  told onions for overwintering do best in a cold frame or under a plastic sheet like a plastic hoop like John was talking about in his news letter so I'm thinking about trying this method sowing under a hoop or poly sheet

I know its a bit early to think about Autumn sowings but its always best to get advise prior to sowings so do i sow the seed in the greenhouse then prick them out and sow the plants individually in rows under the poly sheet or poly hoops ?

the variety I'm going to grow  subject to advise is a Japanese [overwintering variety] Element [Moles seeds] so to get the best advise why not ask the professional growers or gardeners on this site what they think on this topic 

FWIW, I will be sowing Yellow Granex in mid to late summer to plant and over-winter as a short-day onion.  It is a sweet onion variety, but more adapted to southern climates.  They might do well for you, but others may have better suggestions.

[cc]

[/quote]

FWIW, I will be sowing Yellow Granex in mid to late summer to plant and over-winter as a short-day onion.  It is a sweet onion variety, but more adapted to southern climates.  They might do well for you, but others may have better suggestions.
[/quote]
Is that plant outside and let them overwinter outside?

[Subversive_plot]

I will start seed in seed mix indoors, transitioning to outdoors when seedlings are far enough along.  They will be planted in the ground outdoors to overwinter.

[steven c]

as stated before i tried with some spare seed [ailsa craig] last year late summer then moved outside to overwinter under a cloche then moved to cell trays they are now out and doing well i know there is a chance they might go to seed [2nd year] our same year onions rarely do will keep updating.

[Subversive_plot]

as stated before i tried with some spare seed [ailsa craig] last year late summer then moved outside to overwinter under a cloche then moved to cell trays they are now out and doing well i know there is a chance they might go to seed [2nd year] our same year onions rarely do will keep updating.

I looked up Ailsa Craig, it is a long day onion, so usually does not bulb until the long days of summer.  Long day onions are usually the best adapted to northern areas.

I suspect you are right that there's a chance they could go to seed next year if overwintered.