Hardiness Zone: 7b
By Mscat61 from LaVergne, TN
I live in zone 5b of Pennsylvania. I also have clay soil. I find that plants termed "invasive" in other areas do well for me here. I suggest old fashioned daylilies, hosta, lamium (dead nettle), azaleas and rhododendrons, purple (or other colored) coneflowers, phlox, creeping phlox, liatris, fairy roses, iris, mints, primroses, narcissus, crocus, goldenrod, and others you can find by websearch like Google.
Best of luck.
Roses. They love a heavy soil like clay. It holds the water in, roses are heavy drinkers.
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