Onion Set Question

I live in Pittsburgh, PA, and plant little onions in the spring. I was wondering if you could plant them in late summer (August), and at least get the small green onion tops until probably December. The problem is that onion sets are sold only until about the end of May, and I have tried to keep them in the basement until August,but with no luck. Could I freeze them or is there something I could put them in so they do not sprout?
Thanks
Tom
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On Mon, 11 May 2009 13:05:41 -0700 (PDT), " snipped-for-privacy@city-net.com"

Put them in the fridge in the crisper tray.
Charlie
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Plant onion seeds in late summer. If the winters are not too cold, you will be picking green onions all winter and into the following spring. I did this last year, and I still have a few onions left that survived the winter. If your winters are not too cold, you can harvest green onions year round. Just plant seeds if you can't get sets.
OTOH, if your winters are too cold, you might be able to pull up the entire plant, put in a bag, and stick in fridge. Not sure how long it will last - if too moist, it rots, if not moist enough it dries out, if just right it will last a long time. I've stored green onions, roots and all, in my fridge for well over a month and they were as crisp and tasty when they came out as when I put them in.

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You can't freeze plants you plan to grow as you destroy the cells.
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