No problem, Laurie
The sad part is that there still is the information about heat zones is still not readily available.
I understand the "why" of it a lot better and know that it would be very difficult to provide that information to consumers.
When heat zones are assigned, they are assigned by the number of days that temperatures exceed 85F, with no consideration as to humidity in a given climate. Humidity plays a huge role in the loss of moisture through the leaves of a plant due to high temperatures. So, just knowing the heat zone is not enough information to make a good decision about whether or not a plant will do well in your climate or where to site a plant in your garden.
Gardening can be kind of tricky that way.
Edited to add:
Hope you are feeling better soon ... get some sleep !
