Overwintering Onions

QuestionsOverwintering Onions
John Cullen Staff asked 11 years ago

I am about to plant onion sets for overwintering.What are the initial and ongoing fertiliser requirements?Any other things to watch out for?

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offline long ago

John Cullen

Ask Gerry
Gerry Daly


Onion sets can be planted in autumn to over-winter, or planted in late winter or spring. There is a small advantage in terms of earliness by autumn sowing, but also some danger of losses due to harsh weather and slugs.

Autumn-sown sets requite very little in the way of nutrients ... any ordinary fertile soil will do. They could be given a light feed or a liquid feed in early spring to replenish nutrients lost to winter rain. 

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