Iris tectorum ‘Slippery Slope’
Darrell has failed endless times growing the Japanese roof iris in our climate. The flower buds die over winter, starting a rot that eventually kills the plant. He collected this much hardier clone at a high elevation in the Dabashan region of southern Shaanxi Province, China. Here they were pulled up and over the icy mountain by a coal truck in Nov. 2000, hence the cultivar name.
This clone thrives in half sun on an exposed stony ridge in my garden. Best with sharp drainage in light shade/part sun. Large 4” violet blossoms emerge in late spring from 2’ × 2’ bright green foliage fans, giving a tropical appearance to an otherwise New England perennial garden. Spreads slowly, 2-5". per year, by fleshy rhizomes to form a massive clump over time, so give it some elbow room! Needs division every 3-4 years for maximum vigor.
***2010 Cobblewood Introduction***
Darrell has failed endless times growing the Japanese roof iris in our climate. The flower buds die over winter, starting a rot that eventually kills the plant. He collected this much hardier clone at a high elevation in the Dabashan region of southern Shaanxi Province, China. Here they were pulled up and over the icy mountain by a coal truck in Nov. 2000, hence the cultivar name.
This clone thrives in half sun on an exposed stony ridge in my garden. Best with sharp drainage in light shade/part sun. Large 4” violet blossoms emerge in late spring from 2’ × 2’ bright green foliage fans, giving a tropical appearance to an otherwise New England perennial garden. Spreads slowly, 2-5". per year, by fleshy rhizomes to form a massive clump over time, so give it some elbow room! Needs division every 3-4 years for maximum vigor.
