Laurentia fluviatilis, Lobelia fluviatilis or Isotoma fluviatilis 'Blue Star Creeper' Eighteen (18) plantsCommon Name: Laurentia fluviatilis, Swamp Isotome. Zone (5) 6 to 10. Full sun, with some afternoon shade in southern zones.1 to 2 inches high groundcover. Small, light blue, st... See More