We are in zone 4, have a 4 ft drop over 25 feet., sloping both toward the walls and toward the back. with existing retainer wall on one side. This spot is behind the garage and faces west. Looking to put in low maintenance plants, preference is for year round interest.

Plants being considered are ivory hale dogwood, stonecrop, dwarf crabapple, dark knight, little devil ninebark, catmint, delphinium, Jacobs ladder, fine line buckthorn, and cornflower.

‘Any concerns or suggestions for this?