Quote:
Originally Posted by pushak513
how often are these updated cus mine could use an update. it says im in zone 6B but I don't remember single digits in the last 5 or 6 years. I think 12F was as low as it got last year.
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The zones are based on studies that have been done for many years. The latest zone map was released recently... in the past couple of years and was based on minimum temp readings over a 30 year period. So, years can go by that are warmer than the zone you are in or you could be in a micro climate that rarely sees the minimum temp for the zone.