Whoa! Ny gets VERY cold. Probably as cold as Minnesota in some cases.
People's definition of "cold" is relative. Just an example of the first two weeks average temp between Albany and where we are. Your temps average 22+ degrees warmer. That DOES make a significant difference. What you consider "Very cold" we consider a January Thaw.
This is not to be meant as an argument. This was a post asking about when to use a heat pack. I simply stated my opinion (based on 30+ years in the hobby) for the use of heat packs based on WHERE I LIVE. Your opinion on the use of heat packs may be completely different based on WHERE YOU LIVE. I'm sure there are many people on this forum that know how to properly ship plants to extreme cold areas, but chances are there are some that do not. It has been my experience that most people who do not live here are very ignorant
to how cold it gets. Heat packs and insulated boxes may not be necessary to 99% of the places you ship plants, but here during the middle of winter, they are almost a requirement. This is not a debate, it is a fact.
Our mail comes between 10-11 am. We get home between 5-5:30 pm. So yes, 6 hours. Which is why we would never buy fish/plants in January unless they are in an insulated box and using heat packs. Even then it is risky. By the way, our post office closes at 4:45 pm, so pick up is not an option. I stand by my earlier posts.
p.s. By the way, our average temps here are much colder than Anchorage Alaska. http://www.weather.com/weather/wxcli...2?climoMonth=1