Siberian Iris
Iris sibirica
Siberian Iris blooms from May through June.
Everything this page states about the plant was checked against named botanical sources, the bloom months and the water need among them, with what the sources could not settle written down.
Growing Siberian Iris
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 3–9. Expect it to reach about 2.6 ft tall and 1.6 ft wide at maturity, in roughly 2 years.
When to plant Siberian Iris
Plant Siberian Iris in early spring as soon as the soil is workable, or in early fall at least six weeks before your first frost, so roots establish in cool weather. For the middle of its hardy zones 3 to 9 range, spring means March to May and fall means August or September. Once settled, it blooms from May to June.
Month-by-month timing for your zone is on the planting calendar: for the middle of its range, start with zone 6 in March.
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