About
An impressive Japanese iris cultivar, attaining 80-120cm, with upright, sword-shaped leaves from a vigorous rhizome. Impressively broad flowers with ruffled or veined falls appear on tall stems in midsummer. 'Koko-no-iro' is an excellent choice for sunny borders.
About the genus
Iris may be rhizomatous or bulbous perennials, with narrow leaves and erect stems bearing flowers with 3 large spreading or pendent fall petals, alternating with 3 erect, often smaller, standard petals, in late winter, spring or early summer
Plant details
Suggested usesBorders, containers, cottage gardens. Excellent as cut flowers.
Care notes
CultivationGrow in well-drained, fertile soil in full sun. Plant rhizomes shallowly with the top exposed. Water during dry spells but avoid waterlogging.
PruningRemove spent flower stems after blooming. Cut back foliage to a fan shape in late summer. Clear dead leaves in autumn.
PropagationDivide congested clumps every 3-4 years after flowering. Replant healthy rhizome sections with a fan of leaves.
Pest resistanceSlugs and snails may damage young growth. Otherwise generally pest-free.
Disease resistanceLeaf spot and rhizome rot can occur in wet conditions. Ensure good drainage and air circulation.