In shade you will find impatiens to be a good annual flower. I could not determine your hardiness zone but if your winters don't drop below the low 20's you can plant shrubs like Gold Dust Plant and Fatsia in a shady spot. If you like azaleas that would also be fine as would various types of ginger. If I misunderstood the site you were describing please submit another question to the home depot web site with more details and I'll be happy to assist further.
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