Another species you may not know as well is the hardy or dwarf plumbago (Ceratostigma ... only grows to a height of 8 inches. As a ground cover, plumbago is one of the best blue-flowering plants ...

But with hardy plumbago (Ceratostigma plumbaginoides), you’ll enjoy a carpet of cerulean blue blooms every year from late summer to frost. This quickly spreading ground cover forms a tight ...