Japanese Lantern Plant - tends to spread in a big circle; best to grow in a sunken pot! I grow these. I make Fall Arrangements incorporating Japenese Lanterns,
Convolvulus sabatius (syn. Convolvulus mauritanicus) 'Blue Lake', brightly coloured, long-flowering cultivar of a spreading, mainly summer-blooming groundcover from Italy and northern Africa. It can be used in gardens to cover low banks or spill over walls.