Onion Harvest When ?

I am growing some Centurion onions from sets , and the majority seem to be doing very well. But the stalks are still 90% green , I was picking Sturon onions last year about now. When can I expect to pick these ? I planted them out in the first half of April.

TIA

 

Hiya Harry.

I would imagine a few more weeks yet? Best imo to wait until the leaves have pretty much lost all their 'green'. I believe they can also be induced by folding the leaves over, but plenty of time yet.
Hope this helps...

P.S. You can always pull them as you need them

 

Wait for the stems to drop of their own accord Harry.

 

Wait until they flop Harry. As a result of the late Spring lots of veg are a bit behind this year.

 

Thanks all , so I need to use the famous gardening tool - patience ! I'll let them mature as advised above.