Need more info.
What direction does wall face?
What type and pH are the 1' of soil below the mulch?
Is there irrigation? What type head hits it? How often and how much water is going on that spot?
What are your parameters for flowers and maintenance?
Do you like color (variegated) leaves?
Looking for something taller? Medium and bushy? or ground cover height?
I'll stop here. Should allow me to narrow down the thousands of choices to a few or even 1.
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