Iris pseudacorus


Yellow Flag

Vigorous native variety with large bright yellow flowers and lots of foliage.


Vigorous and can be invasive if not contained.

Top tip: If pseudacorus is planted into a small container on a shelf, it will blow over in the wind.

Flowers: Late May/June

Height: 50 – 90cm

Propagation: Divide in early Spring or after flowering, or harvest seeds when ripe in August/September as the pods yellow and begin to open up.

Depth of water over the soil: 0-25cm

Planting: Plant into 10lt planting crate using heavy garden loam or Westland Aquatic Soil