Ruth, can you share the site you use for looking up zones (or did you use a book)?
One caveat I have is that it's really helpful, if you have the option, to use a Sunset gardening book (or
their website) to find their climate zones for your area. They used to only do the Western U.S. but now they have books for other regions. They divide up the regions into a very large number of sections based on climate and other factors. This helps you be much more precise in figuring out if something will live in your area.
For instance, I'm in zone 5 in upstate NY. So is my mom in Washington State. But she lives in this weird area where they get almost no snow or rain. The temperature is really different from here! So she can grow all sorts of things I have no hope of growing. According to Sunset, she's zone
1. I'm zone
42. VERY different.
Anyways, whenever I find something I want to grow that is listed "(any number)-5" or "5-(any number)" (meaning my area is at one end of the growing range), I usually check Sunset to make sure it'll really work here. There are a couple of things I'd love to plant, but Sunset says there's no way they'd survive, so I haven't wasted my money.
I'd love help getting my morning glories and sweet peas to sprout; I end up with so few each year even though I score the seeds and soak them for 24 hours before planting. Frustrating!