Want a long-blooming, low-growing easy-to-grow, winter-hardy perennial? Look no further than Soapwort, Saponaria x lempergii 'Max Frei'.
'Max Frei' starts blooming in early July and goes until late summer. It doesn't need deadheading. It just blooms and blooms.
When it's finally finished, I just cut the whole plant back. Missouri Botanical Garden's website lists 'Max Frei' as being hardy in Zones 3-7 but I'm in Zone 8b and it does fine for me. I have it planted in morning sun and afternoon shade and I supply it with regular water.
Are you growing this sweet plant?