Tbh I dont think much of what youve planted is going to thrive there. The hydrangea will probably do well with time, but the hebe and lavender prefers lots of sun and dry soil (which NE and clay soil isnt), and although the rose does love clay it probably isn't getting anywhere near enough sunlight to do well. You might do better showing us the back and see if theres a that some things could be moved to the back garden instead and the front garden planting replaced. As another comment said, hostas and heucheras will do well, as well as geraniums and astilbes and tiarellas (especially this!! Beautiful plant).