Yellow Iris

Iris pseudacorus

  1. Wildlife
  2. Wildflowers
  3. Yellow Iris


The water-loving Yellow Iris can be found along the margins of waterways and ponds, and in wet woodlands, fens and saltmarshes. Often mingled among other reedbed plants, its large, bright yellow flowers appear between May and August and are thought to be the inspiration for the fleur-de-lis symbol which is used in heraldry and also by the scouts.

How to identify

Yellow Iris has tall reed stems that are sometimes branched. Its long, narrow leaves are grey-green and sword-like, and may droop at the ends. Its large, yellow flower petals fold back on themselves and hang down around the outer edges of the flower.

Where to find it



When to find it

  • May
  • June
  • July
  • August

How can people help

Human activity, including the drainage of land for agriculture and development, has resulted in the disappearance of many of the UK's wetlands. The Wildlife Trusts are working closely with planners, developers and farmers to ensure our wetlands are protected. You can help too: add native plants and flowers, such as Yellow Iris, to a wildlife-friendly pond and its margins, and provide shelter for amphibians and nectar for insects. In partnership with the RHS, The Wildlife Trusts' Wild About Gardens initiative can help you plan your wildlife garden.

Species information

Common name
Yellow Iris
Latin name
Iris pseudacorus
Height: 40-100cm
Conservation status