Dianella revoluta Coolvista

Dianella revoluta 'Coolvista' is a clump-forming, evergreen perennial known for its striking, blue-grey, strap-like foliage. It is also sold under the trade name 'Allyn Citation'. As a type of flax lily, it adds year-round color and texture to gardens, rockeries, containers, and borders

• Foliage: Dense, upright clumps of narrow, blue-grey leaves that create a spiky, grassy look.
• Flowers and berries: In the summer, it produces small, star-shaped, blue-to-purple-blue and yellow flowers on loose sprays. These are sometimes followed by ornamental blue-black berries.
• Size: Grows to a height of about 40–50 cm, with a spread of 25–30 cm.
• Heat and drought tolerance: Once established, it is heat- and drought-tolerant.
• Hardiness: In colder climates, it is not fully hardy and requires winter protection. It can be overwintered indoors in a cool greenhouse or brought inside as a houseplant