My only comment is that my understanding of 'full sun' is if an area gets AT LEAST six hours of sun a day. Not sure if I am right but do know that plants that require full sun should have at least that much, if not more.
gg

Mystic,
Here's a stie that may answer your questions.
Vikki

Here is a link that might be useful: Shedding Light

gg is right - the full sun requirement is for at least 6 hours of sun and it's generally between 10 a.m. and 4 p.m. That said, you will probably have to adjust according to your area's sun conditions. This may take some trial and error and some moving of plants.

As an example, I live at a mile high elevation with very bright sun conditions. Roses that would normally need at least 6 hours of sun do well in 4, some less. I have some on the north side that only get morning sun and late afternoon sun but they still flourish. My west side doesn't get sun until after one p.m. but then it can bake things. I really have to pay attention to what I plant there. Roses, hollyhocks and salvias - no problem. My delphs, foxglove and columbine - no way.

Diana

If your summers are really hot, plants may tolerate a little more shade. Also, many plants that are supposed to get full sun will do well in your less sunny spots, but you'll have to experiment to see which "FS" plants really can thrive with less sun.

My yard is all dappled sun (or shade). It's not enough sun for snapdragons, but it's fine for zinnias. Other plants that do well in my yard in less than full sun are: rudbeckia, daylily, feverfew, salvia, phlox, malva, hollyhock, echinacea, buddleia, heliopsis, Chocolate Joe Pye, lavender, veronica, agastache, larkspur, tiger lily and oriental liliy, penstemon and maximilian sunflower. I also have Stachys byzantina blooming, but it's not as full as in some photos I've seen on here. Foxgloves should love the part sun conditions. I hope this list helps you.

Thanks so much to everyone that replied... I now have a good understanding of what kind of light conditions I have... I've been checking each every day at different times to make sure and I also have a small thermometer that hovers above the ground (hanging on wooden stakes) to test just how hot it gets. I've been going outside almost every hour for the last couple of weeks and recording the temp/light in each of the locations I'm planning on planting... this might be going a little overboard but I want to be sure! I just HATE to kill anything because of something I did or didn't do. ;-)

stage_rat - I am in Zone 6 SE PA and so a lot of the plants that you listed in your post are ones that I've chosen to plant. Now that I know what can handle a little less than full sun I should be pretty good with my choices.

Thanks again for everyone's help! It is greatly appreciated.

ttfn
Mystic.