Planting in wall of concrete pieces
With the planting season upon us I need some suggestions as to what to plant in a tiered sloping wall made of concrete pieces. I'm in zone 5 - Michigan and the wall faces north getting hot sun all day with virtually no shade.
Due to the way its constructed you can hardly reach the dirt. I would prefer something that is long flowering. I've tried phlox before but it doesn't bloom as long as I'd like. I've also tried "snow on the mountain" (I think thats what its called) but was unhappy with it cause of the rusty looking spots that gets all over the leaves. It didn't do very well either.
At the base of the hill is a white fountain and small homemade pond with an arbor over it that I hope to have blue morning glories growing on. I'd like to have something that would complement the ideas I already have. I wouldn't even mind white then it could be my "evening garden."
I have hens and chicks in another section to the west of the section I'm looking to plant. They do well but I prefer not to have anymore than I do now.
Any help, ideas and suggestions would be greatly appreciated.