Yeah I don't know if it works or not but here is qoute from another site from their version of our HG (though not quite up to HG's standards)
Actually, thanks for bringing that up. The original poster is in Zone 9 California. She does need to put the garlic in the refrigerator for a couple of weeks before planting it, or else dump a bunch of ice cubes on the ground a couple of times during winter to simulate cold temperatures. Garlic does much better when it has encountered some cold temps in the early stages. I used to refrigerate it before planting, when I lived in California.
This was from last year. I also found another stating basically the same thing. He was in Florida stating that he had pre-chilled (in the fridge not freezer) some garlic that did okay and had some non-chilled garlic that didn't produce anything.
The thing that brought this up was on a totally different forum I said something about this but was corrected from "freezing to "refrigerated" by one of their main people.
Just trying to clear all this up. I guess I was just wrong about the "freezing" word, or maybe all of it. I don't know.