Yellow flag iris

Alerts

COVID-19 Alert Level 2 information

See information and updates relating to Council services during Alert Level 2 - many Council facilities are now open, including our offices and customer service centres.

Share this page

Sharing...

Yellow flag iris

Yellow flag iris is an aquatic perennial which grows up to 2 metres tall and originates from Europe and North Africa. It has yellow flowers which form brown seed capsules and dense rhizomes. It is poisonous to humans and animals and forms dense mats that displace native vegetation and increase the risk of flooding.

Infestations of yellow flag iris can be found in many waterways on the Wairau Plains in Marlborough.

Go to the Weedbusters website for further information, control tips and images