Iris pseudacorus

Species

Yellow flag iris (Iris pseudacorus) is a long-lived, evergreen perennial herb that is native to Europe, western Asia and North Africa. It was introduced to New Zealand as a garden ornamental and was first recorded in the wild (naturalised) in 1978. The plant grows in dense clumps from thick rhizomes and has erect, sword-shaped leaves. It flowers from October to December, producing large yellow flowers, which develop into three-sided seed capsules containing many flattened brown seeds. It tolerates flooding, damp conditions and a wide range of soil types. It reproduces by seed and vegetatively from rhizomes. Seeds are dispersed by water. Rhizomes are spread by water, soil movement, dumped garden waste and other human activities. Rhizome fragments readily produce new plants.

This description has been automatically generated using information from trusted sources. If you notice any errors or omissions, please let us know.