Hi Bill-
When you look at plants specific to your reading (by going into your reading and looking at "Top Recommendations" or "All Recommendations") we will only show you plants that are suited for your reading (light, temperature, humidity) and zone.
However, when you look at the Plant Library, you'll see all plants we have, unfiltered by zone.
So to be clear--if you want to see plants for a specific area, look them up by reading.
I hope this helps you.
Edith