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The yellow iris, also known as yellow flag or water flag, is a native perennial of wet ground and water margins. On former coal mining sites, it often grows around subsidence pools and waterlogged hollows, where its thick rhizomes help bind soft, wet soils. Its tall, sword-like leaves and bright yellow flowers, which appear from May to July, attract bumblebees and other insects, while dense stands provide shelter for amphibians, birds and other wetland wildlife.
Its roots, treated with iron, once made black dye and ink, and it is widely thought to be the flower behind the fleur-de-lis.
Alongside reeds, rushes and other marginal plants, it helps turn the flooded legacy of mining into valuable wetland habitat.
The yellow iris, also known as yellow flag or water flag, is a native perennial of wet ground and water margins. On former coal mining sites, it often grows around subsidence pools and waterlogged hollows, where its thick rhizomes help bind soft, wet soils. Its tall, sword-like leaves and bright yellow flowers, which appear from May to July, attract bumblebees and other insects, while dense stands provide shelter for amphibians, birds and other wetland wildlife.
Its roots, treated with iron, once made black dye and ink, and it is widely thought to be the flower behind the fleur-de-lis.
Alongside reeds, rushes and other marginal plants, it helps turn the flooded legacy of mining into valuable wetland habitat.