In reply to TheDrunkenBakers:
> Self sufficiency sounds good so I was curious as to whether the hanging was to keep them fresh to eat or for seed stock the following year. I have a cold garage which could be used for this.
Both, I think; I don't distinguish between the ones I'm going to eat and the ones I'm going to replant, but just pick the best-looking when it comes to planting time! Hanging seems to be the best treatment for both purposes. I've not been at all scientific about this, though - I've just found a system that works and stuck to it.
> What is the growing season?
I plant my garlic and shallots at the same time, quite late - end Feb, or early March - as I have heavy clay soil it takes forever to warm up, and if I plant too early they sometimes rot in the ground before they take root. I have never ever been organised enough to get them in before Christmas! And anyway, alliums follow root veg in my rotation scheme, so the bed they're going in is usually still full of parsnips at that time of year.
They're both done at about the same time, too, usually late August or early September. They tell you when they're ready; the leaves go yellow and droop. Then they need a week or two to dry off in a greenhouse or coldframe.