The thing about our annual pilgrimage to the Outer Banks (NC) is that we miss some of our garden's display. I try to plant complementary colors, blooming around the same times - when I can (zones and coastal conditions can interfere).
But going to the Outer Banks gives me a border for the garden. Do you see the whelks, above? We collect those on an abandoned island in the Banks string. Only state park people over there.