POLEMONIUM caeruleum BRESSINGHAM PURPLE - Short 15" - Plant 12" apart. zone 4 -9 PPAF Highly decorative. Beautiful flowers of deep electric lavender-blue above the decorative mound of fernlike foliage. The leaves take on a rich, dark purple hue in spring and again in fall. In between, they turn somewhat greener in summer depending on light intensity. Large Pots. A Blooms of Bressingham selection.