|Purchased Giant Iris at Home Depot, Orlando, Fl today. What genus is it? What are the care instructions?|
|Giant Apostles' Iris (Neomarica coerulea 'Regina'), the Florida Nursery Growers plant of the year for 2010. (A fairly new variety from Brazil also known as Giant Apostles iris or Walking iris.) Walking iris is clump-forming and its leaves are broad, sword-shaped and pointed at the ends. They grow in flat, fan-like arrangements, as do most members of the Iris family. The brilliant purple-blue iris flowers are marked with white and burgundy-brown spots and borne in clusters on leafy stems held above the foliage. This species tends to bloom in succession from summer to spring, but 'Regina' may blooms for longer than average. Each flower opens for only one day. The fruits that follow are brown, three-valved capsules. Plants grow 3-4' high and wide.
Sites with partial sun and moist, well-drained soils are ideal. It is moderately salt tolerant and is quite frost sensitive. To preserve the characteristics of this cultivar, propagate by division. The walking iris is a reliable, easy-to-grow perennial for interior and exterior landscapes. Plant it in masses as a groundcover or in large beds or containers.