Bulbous hardy semi-evergreen perennial with flower heads in shades of blue July-Aug. Ht 70cm
Bulbous semi-evergreen perennial with large lilac-blue flower heads from darker buds July-Aug. Ht to 80cm
Hardy deciduous hybrid with open soft violet-blue flowers on tall stems July-Sept. Ht 80-120cm. Forms imposing clumps in full sun
PVR. Large flower heads of mid violet-blue flowers over a long period from June-Sept. Ht 80-100cm. Strappy evergreen foliage may need winter protection.