The Immortality Irish is considered a Reblooming wonder! If you've never grown a Reblooming Iris or have had mixed results with other varieties, we suggest you try 'Immortality,' for it rarely disappoints. After mounting a good show in June, this sweetly fragrant beauty produces a second crop of pristine white flowers in late summer almost every year and in almost every climate (it even reblooms in Zone 4). It's also a great garden plant. Hard to beat.
Provide enriched, humusy, moisture-retentive soil. Maintain evenly moist soil in first growing season to establish root system. Once established, tolerates soggy soils and standing water in growing season; reduce soil moisture in winter to prevent root rot. Remove faded foliage before new leaves emerge. Divide every 2 to 3 years in early spring.