Dianella caerulea Cassa Blue ('Dbb03'PBR)

A compact, half-hardy evergreen perennial to 40cm high, with dense clumps of narrow, stiff, grass-like blue-green leaves. In early to mid summer, produces sprays of nodding light blue flowers with conspicuous yellow anthers, held on branched stems high above the foliage. These are sometimes followed by round blue-purple berries